[openwrt/openwrt.git] / target / linux / brcm2708 / patches-4.19 / 950-0056-BCM2708-Add-core-Device-Tree-support.patch

From d04105f6d48f160f4b7ab874ed7f878c2b84b466 Mon Sep 17 00:00:00 2001
From: notro <notro@tronnes.org>
Date: Wed, 9 Jul 2014 14:46:08 +0200
Subject: [PATCH] BCM2708: Add core Device Tree support
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Add the bare minimum needed to boot BCM2708 from a Device Tree.

Signed-off-by: Noralf Tronnes <notro@tronnes.org>

BCM2708: DT: change 'axi' nodename to 'soc'

Change DT node named 'axi' to 'soc' so it matches ARCH_BCM2835.
The VC4 bootloader fills in certain properties in the 'axi' subtree,
but since this is part of an upstreaming effort, the name is changed.

Signed-off-by: Noralf Tronnes notro@tronnes.org

BCM2708_DT: Correct length of the peripheral space

Use dts-dirs feature for overlays.

The kernel makefiles have a dts-dirs target that is for vendor subdirectories.

Using this fixes the install_dtbs target, which previously did not install the overlays.

BCM270X_DT: configure I2S DMA channels

Signed-off-by: Matthias Reichl <hias@horus.com>

BCM270X_DT: switch to bcm2835-i2s

I2S soundcard drivers with proper devicetree support (i.e. not linking
to the cpu_dai/platform via name but to cpu/platform via of_node)
will work out of the box without any modifications.

When the kernel is compiled without devicetree support the platform
code will instantiate the bcm2708-i2s driver and I2S soundcard drivers
will link to it via name, as before.

Signed-off-by: Matthias Reichl <hias@horus.com>

SDIO-overlay: add poll_once-boolean parameter

Add paramter to toggle sdio-device-polling
done every second or once at boot-time.

Signed-off-by: Patrick Boettcher <patrick.boettcher@posteo.de>

BCM270X_DT: Make mmc overlay compatible with current firmware

The original DT overlay logic followed a merge-then-patch procedure,
i.e. parameters are applied to the loaded overlay before the overlay
is merged into the base DTB. This sequence has been changed to
patch-then-merge, in order to support parameterised node names, and
to protect against bad overlays. As a result, overrides (parameters)
must only target labels in the overlay, but the overlay can obviously target nodes in the base DTB.

mmc-overlay.dts (that switches back to the original mmc sdcard
driver) is the only overlay violating that rule, and this patch
fixes it.

bcm270x_dt: Use the sdhost MMC controller by default

The "mmc" overlay reverts to using the other controller.

squash: Add cprman to dt

BCM270X_DT: Use clk_core for I2C interfaces

BCM270X_DT: Use bcm283x.dtsi, bcm2835.dtsi and bcm2836.dtsi

The mainline Device Tree files are quite close to downstream now.
Let's use bcm283x.dtsi, bcm2835.dtsi and bcm2836.dtsi as base files
for our dts files.

Mainline dts files are based on these files:

          bcm2835-rpi.dtsi
  bcm2835.dtsi    bcm2836.dtsi
          bcm283x.dtsi

Current downstream are based on these:

  bcm2708.dtsi    bcm2709.dtsi    bcm2710.dtsi
             bcm2708_common.dtsi

This patch introduces this dependency:

  bcm2708.dtsi    bcm2709.dtsi
          bcm2708-rpi.dtsi
          bcm270x.dtsi
  bcm2835.dtsi    bcm2836.dtsi
          bcm283x.dtsi

And:
          bcm2710.dtsi
          bcm2708-rpi.dtsi
          bcm270x.dtsi
          bcm283x.dtsi

bcm270x.dtsi contains the downstream bcm283x.dtsi diff.
bcm2708-rpi.dtsi is the downstream version of bcm2835-rpi.dtsi.

Other changes:
- The led node has moved from /soc/leds to /leds. This is not a problem
  since the label is used to reference it.
- The clk_osc reg property changes from 6 to 3.
- The gpu nodes has their interrupt property set in the base file.
- the clocks label does not point to the /clocks node anymore, but
  points to the cprman node. This is not a problem since the overlays
  that use the clock node refer to it directly: target-path = "/clocks";
- some nodes now have 2 labels since mainline and downstream differs in
  this respect: cprman/clocks, spi0/spi, gpu/vc4.
- some nodes doesn't have an explicit status = "okay" since they're not
  disabled in the base file: watchdog and random.
- gpiomem doesn't need an explicit status = "okay".
- bcm2708-rpi-cm.dts got the hpd-gpios property from bcm2708_common.dtsi,
  it's now set directly in that file.
- bcm2709-rpi-2-b.dts has the timer node moved from /soc/timer to /timer.
- Removed clock-frequency property on the bcm{2709,2710}.dtsi timer nodes.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>

BCM270X_DT: Use raspberrypi-power to turn on USB power

Use the raspberrypi-power driver to turn on USB power.

Signed-off-by: Noralf Trønnes <noralf@tronnes.org>

BCM270X_DT: Add a .dtbo target, use for overlays

Change the filenames and extensions to keep the pre-DDT style of
overlay (<name>-overlay.dtb) distinct from new ones that use a
different style of local fixups (<name>.dtbo), and to match other
platforms.

The RPi firmware uses the DDTK trailer atom to choose which type of
overlay to use for each kernel.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

BCM270X_DT: Don't generate "linux,phandle" props

The EPAPR standard says to use "phandle" properties to store phandles,
rather than the deprecated "linux,phandle" version. By default, dtc
generates both, but adding "-H epapr" causes it to only generate
"phandle"s, saving some space and clutter.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

BCM270X_DT: Add overlay for enc28j60 on SPI2

Works on SPI2 for compute module

BCM270X_DT: Add midi-uart0 overlay

MIDI requires 31.25kbaud, a baudrate unsupported by Linux. The
midi-uart0 overlay configures uart0 (ttyAMA0) to use a fake clock
so that requesting 38.4kbaud actually gets 31.25kbaud.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

BCM270X_DT: Add i2c-sensor overlay

The i2c-sensor overlay is a container for various pressure and
temperature sensors, currently bmp085 and bmp280. The standalone
bmp085_i2c-sensor overlay is now deprecated.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

BCM270X_DT: overlays/*-overlay.dtb -> overlays/*.dtbo (#1752)

We now create overlays as .dtbo files.

build: support for .dtbo files for dtb overlays

Kernel 4.4.6+ on RaspberryPi support .dtbo files for overlays, instead of .dtb.
Patch the kernel, which has faulty rules to generate .dtbo the way yocto does

Signed-off-by: Herve Jourdain <herve.jourdain@neuf.fr>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

BCM270X: Drop position requirement for CMA in VC4 overlay.

No longer necessary since 2aefcd576195a739a7a256099571c9c4a401005f,
and will probably let peeople that want to choose a larger CMA
allocation (particularly on pi0/1).

Signed-off-by: Eric Anholt <eric@anholt.net>

BCM270X_DT: RPi Device Tree tidy

Use the upstream sdhost node, add thermal-zones, and factor out some
common elements.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

kbuild: Silence unhelpful DTC warnings

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
 .gitignore                                    |    2 +-
 arch/arm/Makefile                             |    2 +
 arch/arm/boot/dts/Makefile                    |   21 +
 arch/arm/boot/dts/bcm2708-rpi-0-w.dts         |  166 ++
 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts      |  122 ++
 arch/arm/boot/dts/bcm2708-rpi-b.dts           |  112 +
 arch/arm/boot/dts/bcm2708-rpi-cm.dts          |   95 +
 arch/arm/boot/dts/bcm2708-rpi-cm.dtsi         |   17 +
 arch/arm/boot/dts/bcm2708-rpi.dtsi            |  159 ++
 arch/arm/boot/dts/bcm2708.dtsi                |   11 +
 arch/arm/boot/dts/bcm2709-rpi-2-b.dts         |  123 ++
 arch/arm/boot/dts/bcm2709.dtsi                |   19 +
 arch/arm/boot/dts/bcm270x.dtsi                |  152 ++
 arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts    |  183 ++
 arch/arm/boot/dts/bcm2710-rpi-3-b.dts         |  191 ++
 arch/arm/boot/dts/bcm2710-rpi-cm3.dts         |  129 ++
 arch/arm/boot/dts/bcm2710.dtsi                |   29 +
 arch/arm/boot/dts/bcm2835-rpi.dtsi            |    2 +-
 arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi    |   17 +
 arch/arm/boot/dts/overlays/Makefile           |  145 ++
 arch/arm/boot/dts/overlays/README             | 1952 +++++++++++++++++
 .../dts/overlays/adau1977-adc-overlay.dts     |   40 +
 .../dts/overlays/adau7002-simple-overlay.dts  |   52 +
 .../arm/boot/dts/overlays/ads1015-overlay.dts |   98 +
 .../arm/boot/dts/overlays/ads1115-overlay.dts |  103 +
 .../arm/boot/dts/overlays/ads7846-overlay.dts |   89 +
 .../overlays/akkordion-iqdacplus-overlay.dts  |   49 +
 .../allo-boss-dac-pcm512x-audio-overlay.dts   |   59 +
 .../dts/overlays/allo-digione-overlay.dts     |   44 +
 .../allo-katana-dac-audio-overlay.dts         |   57 +
 .../allo-piano-dac-pcm512x-audio-overlay.dts  |   54 +
 ...o-piano-dac-plus-pcm512x-audio-overlay.dts |   55 +
 .../boot/dts/overlays/applepi-dac-overlay.dts |   57 +
 .../boot/dts/overlays/at86rf233-overlay.dts   |   57 +
 .../overlays/audioinjector-addons-overlay.dts |   59 +
 .../audioinjector-wm8731-audio-overlay.dts    |   39 +
 .../boot/dts/overlays/audremap-overlay.dts    |   19 +
 .../boot/dts/overlays/balena-fin-overlay.dts  |   79 +
 .../overlays/bmp085_i2c-sensor-overlay.dts    |   23 +
 arch/arm/boot/dts/overlays/dht11-overlay.dts  |   39 +
 .../dts/overlays/dionaudio-loco-overlay.dts   |   39 +
 .../overlays/dionaudio-loco-v2-overlay.dts    |   49 +
 arch/arm/boot/dts/overlays/dpi18-overlay.dts  |   31 +
 arch/arm/boot/dts/overlays/dpi24-overlay.dts  |   31 +
 .../arm/boot/dts/overlays/dwc-otg-overlay.dts |   20 +
 arch/arm/boot/dts/overlays/dwc2-overlay.dts   |   28 +
 .../boot/dts/overlays/enc28j60-overlay.dts    |   53 +
 .../dts/overlays/enc28j60-spi2-overlay.dts    |   47 +
 .../arm/boot/dts/overlays/exc3000-overlay.dts |   48 +
 .../boot/dts/overlays/fe-pi-audio-overlay.dts |   70 +
 arch/arm/boot/dts/overlays/goodix-overlay.dts |   46 +
 .../googlevoicehat-soundcard-overlay.dts      |   49 +
 .../arm/boot/dts/overlays/gpio-ir-overlay.dts |   48 +
 .../boot/dts/overlays/gpio-ir-tx-overlay.dts  |   36 +
 .../boot/dts/overlays/gpio-key-overlay.dts    |   48 +
 .../boot/dts/overlays/gpio-no-irq-overlay.dts |   14 +
 .../dts/overlays/gpio-poweroff-overlay.dts    |   36 +
 .../dts/overlays/gpio-shutdown-overlay.dts    |   80 +
 .../dts/overlays/hifiberry-amp-overlay.dts    |   39 +
 .../dts/overlays/hifiberry-dac-overlay.dts    |   34 +
 .../overlays/hifiberry-dacplus-overlay.dts    |   59 +
 .../dts/overlays/hifiberry-digi-overlay.dts   |   41 +
 .../overlays/hifiberry-digi-pro-overlay.dts   |   43 +
 arch/arm/boot/dts/overlays/hy28a-overlay.dts  |   93 +
 arch/arm/boot/dts/overlays/hy28b-overlay.dts  |  148 ++
 .../boot/dts/overlays/i2c-bcm2708-overlay.dts |   13 +
 .../boot/dts/overlays/i2c-gpio-overlay.dts    |   43 +
 .../arm/boot/dts/overlays/i2c-mux-overlay.dts |  139 ++
 .../dts/overlays/i2c-pwm-pca9685a-overlay.dts |   26 +
 .../dts/overlays/i2c-rtc-gpio-overlay.dts     |  183 ++
 .../arm/boot/dts/overlays/i2c-rtc-overlay.dts |  181 ++
 .../boot/dts/overlays/i2c-sensor-overlay.dts  |  223 ++
 .../dts/overlays/i2c0-bcm2708-overlay.dts     |   69 +
 .../dts/overlays/i2c1-bcm2708-overlay.dts     |   43 +
 .../dts/overlays/i2s-gpio28-31-overlay.dts    |   18 +
 .../boot/dts/overlays/iqaudio-dac-overlay.dts |   46 +
 .../dts/overlays/iqaudio-dacplus-overlay.dts  |   49 +
 .../iqaudio-digi-wm8804-audio-overlay.dts     |   47 +
 .../dts/overlays/jedec-spi-nor-overlay.dts    |  309 +++
 .../dts/overlays/justboom-dac-overlay.dts     |   46 +
 .../dts/overlays/justboom-digi-overlay.dts    |   41 +
 .../boot/dts/overlays/lirc-rpi-overlay.dts    |   57 +
 .../arm/boot/dts/overlays/ltc294x-overlay.dts |   86 +
 .../boot/dts/overlays/mbed-dac-overlay.dts    |   64 +
 .../boot/dts/overlays/mcp23017-overlay.dts    |   54 +
 .../boot/dts/overlays/mcp23s17-overlay.dts    |  732 +++++++
 .../dts/overlays/mcp2515-can0-overlay.dts     |   73 +
 .../dts/overlays/mcp2515-can1-overlay.dts     |   73 +
 .../arm/boot/dts/overlays/mcp3008-overlay.dts |  205 ++
 .../arm/boot/dts/overlays/mcp3202-overlay.dts |  205 ++
 .../dts/overlays/media-center-overlay.dts     |  134 ++
 .../boot/dts/overlays/midi-uart0-overlay.dts  |   36 +
 .../boot/dts/overlays/midi-uart1-overlay.dts  |   43 +
 arch/arm/boot/dts/overlays/mmc-overlay.dts    |   39 +
 .../arm/boot/dts/overlays/mpu6050-overlay.dts |   28 +
 .../arm/boot/dts/overlays/mz61581-overlay.dts |  117 +
 .../arm/boot/dts/overlays/papirus-overlay.dts |   89 +
 .../boot/dts/overlays/pi3-act-led-overlay.dts |   27 +
 .../dts/overlays/pi3-disable-bt-overlay.dts   |   46 +
 .../dts/overlays/pi3-disable-wifi-overlay.dts |   13 +
 .../dts/overlays/pi3-miniuart-bt-overlay.dts  |   74 +
 arch/arm/boot/dts/overlays/pibell-overlay.dts |   81 +
 .../boot/dts/overlays/piscreen-overlay.dts    |  102 +
 .../boot/dts/overlays/piscreen2r-overlay.dts  |  106 +
 .../arm/boot/dts/overlays/pisound-overlay.dts |  120 +
 .../arm/boot/dts/overlays/pitft22-overlay.dts |   69 +
 .../overlays/pitft28-capacitive-overlay.dts   |   91 +
 .../overlays/pitft28-resistive-overlay.dts    |  121 +
 .../overlays/pitft35-resistive-overlay.dts    |  121 +
 .../boot/dts/overlays/pps-gpio-overlay.dts    |   38 +
 .../boot/dts/overlays/pwm-2chan-overlay.dts   |   47 +
 .../boot/dts/overlays/pwm-ir-tx-overlay.dts   |   40 +
 arch/arm/boot/dts/overlays/pwm-overlay.dts    |   43 +
 .../arm/boot/dts/overlays/qca7000-overlay.dts |   52 +
 .../dts/overlays/rotary-encoder-overlay.dts   |   59 +
 .../dts/overlays/rpi-backlight-overlay.dts    |   21 +
 .../overlays/rpi-cirrus-wm5102-overlay.dts    |  146 ++
 .../arm/boot/dts/overlays/rpi-dac-overlay.dts |   34 +
 .../boot/dts/overlays/rpi-display-overlay.dts |   91 +
 .../boot/dts/overlays/rpi-ft5406-overlay.dts  |   30 +
 .../boot/dts/overlays/rpi-proto-overlay.dts   |   39 +
 .../boot/dts/overlays/rpi-sense-overlay.dts   |   47 +
 arch/arm/boot/dts/overlays/rpi-tv-overlay.dts |   31 +
 .../rra-digidac1-wm8741-audio-overlay.dts     |   49 +
 .../dts/overlays/sc16is750-i2c-overlay.dts    |   37 +
 .../dts/overlays/sc16is752-i2c-overlay.dts    |   40 +
 .../dts/overlays/sc16is752-spi1-overlay.dts   |   61 +
 arch/arm/boot/dts/overlays/sdhost-overlay.dts |   31 +
 .../boot/dts/overlays/sdio-1bit-overlay.dts   |   63 +
 arch/arm/boot/dts/overlays/sdio-overlay.dts   |   63 +
 .../arm/boot/dts/overlays/sdtweak-overlay.dts |   25 +
 .../arm/boot/dts/overlays/smi-dev-overlay.dts |   18 +
 .../boot/dts/overlays/smi-nand-overlay.dts    |   69 +
 arch/arm/boot/dts/overlays/smi-overlay.dts    |   37 +
 .../dts/overlays/spi-gpio35-39-overlay.dts    |   31 +
 .../arm/boot/dts/overlays/spi-rtc-overlay.dts |   33 +
 .../arm/boot/dts/overlays/spi0-cs-overlay.dts |   29 +
 .../boot/dts/overlays/spi0-hw-cs-overlay.dts  |   26 +
 .../boot/dts/overlays/spi1-1cs-overlay.dts    |   57 +
 .../boot/dts/overlays/spi1-2cs-overlay.dts    |   69 +
 .../boot/dts/overlays/spi1-3cs-overlay.dts    |   81 +
 .../boot/dts/overlays/spi2-1cs-overlay.dts    |   57 +
 .../boot/dts/overlays/spi2-2cs-overlay.dts    |   69 +
 .../boot/dts/overlays/spi2-3cs-overlay.dts    |   81 +
 .../dts/overlays/superaudioboard-overlay.dts  |   73 +
 arch/arm/boot/dts/overlays/sx150x-overlay.dts | 1706 ++++++++++++++
 .../boot/dts/overlays/tinylcd35-overlay.dts   |  224 ++
 arch/arm/boot/dts/overlays/uart0-overlay.dts  |   32 +
 arch/arm/boot/dts/overlays/uart1-overlay.dts  |   38 +
 .../upstream-aux-interrupt-overlay.dts        |   33 +
 .../boot/dts/overlays/upstream-overlay.dts    |  154 ++
 .../dts/overlays/vc4-fkms-v3d-overlay.dts     |   89 +
 .../boot/dts/overlays/vc4-kms-v3d-overlay.dts |  151 ++
 arch/arm/boot/dts/overlays/vga666-overlay.dts |   30 +
 .../arm/boot/dts/overlays/w1-gpio-overlay.dts |   41 +
 .../dts/overlays/w1-gpio-pullup-overlay.dts   |   43 +
 .../arm/boot/dts/overlays/wittypi-overlay.dts |   44 +
 scripts/Makefile.dtbinst                      |    8 +-
 scripts/Makefile.lib                          |   13 +
 159 files changed, 14852 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi-0-w.dts
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi-b.dts
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dts
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
 create mode 100644 arch/arm/boot/dts/bcm2708-rpi.dtsi
 create mode 100644 arch/arm/boot/dts/bcm2708.dtsi
 create mode 100644 arch/arm/boot/dts/bcm2709-rpi-2-b.dts
 create mode 100644 arch/arm/boot/dts/bcm2709.dtsi
 create mode 100644 arch/arm/boot/dts/bcm270x.dtsi
 create mode 100644 arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
 create mode 100644 arch/arm/boot/dts/bcm2710-rpi-3-b.dts
 create mode 100644 arch/arm/boot/dts/bcm2710-rpi-cm3.dts
 create mode 100644 arch/arm/boot/dts/bcm2710.dtsi
 create mode 100644 arch/arm/boot/dts/overlays/Makefile
 create mode 100644 arch/arm/boot/dts/overlays/README
 create mode 100644 arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/ads1015-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/ads1115-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/ads7846-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/allo-digione-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/at86rf233-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/audremap-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/balena-fin-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dht11-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dpi18-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dpi24-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dwc-otg-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/dwc2-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/enc28j60-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/exc3000-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/goodix-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-key-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hy28a-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/hy28b-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-mux-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/justboom-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/justboom-digi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/ltc294x-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mbed-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mcp23017-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mcp23s17-overlay.dts
 create mode 100755 arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
 create mode 100755 arch/arm/boot/dts/overlays/mcp3008-overlay.dts
 create mode 100755 arch/arm/boot/dts/overlays/mcp3202-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/media-center-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/midi-uart1-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mmc-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mpu6050-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/mz61581-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/papirus-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pi3-disable-wifi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pibell-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/piscreen-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pisound-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pitft22-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/pwm-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/qca7000-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-display-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-sense-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rpi-tv-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sdhost-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sdio-1bit-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sdio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sdtweak-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/smi-dev-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/smi-nand-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/smi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi0-cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi0-hw-cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts
 create mode 100755 arch/arm/boot/dts/overlays/superaudioboard-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/sx150x-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
 create mode 100755 arch/arm/boot/dts/overlays/uart0-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/uart1-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/upstream-aux-interrupt-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/upstream-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/vga666-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/wittypi-overlay.dts

--- a/.gitignore
+++ b/.gitignore
@@ -15,7 +15,7 @@
 *.bin
 *.bz2
 *.c.[012]*.*
-*.dtb
+*.dtb*
 *.dtb.S
 *.dwo
 *.elf
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -341,6 +341,8 @@ $(INSTALL_TARGETS):
 
 %.dtb: | scripts
        $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
+%.dtbo: | scripts
+       $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 PHONY += dtbs dtbs_install
 
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1,4 +1,15 @@
 # SPDX-License-Identifier: GPL-2.0
+
+dtb-$(CONFIG_ARCH_BCM2835) += \
+       bcm2708-rpi-b.dtb \
+       bcm2708-rpi-b-plus.dtb \
+       bcm2708-rpi-cm.dtb \
+       bcm2708-rpi-0-w.dtb \
+       bcm2709-rpi-2-b.dtb \
+       bcm2710-rpi-3-b.dtb \
+       bcm2710-rpi-3-b-plus.dtb \
+       bcm2710-rpi-cm3.dtb
+
 dtb-$(CONFIG_ARCH_ALPINE) += \
        alpine-db.dtb
 dtb-$(CONFIG_MACH_ARTPEC6) += \
@@ -1207,3 +1218,13 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
        aspeed-bmc-opp-zaius.dtb \
        aspeed-bmc-portwell-neptune.dtb \
        aspeed-bmc-quanta-q71l.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
+subdir-y       := overlays
+
+# Enable fixups to support overlays on BCM2835 platforms
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+       DTC_FLAGS ?= -@
+endif
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-0-w.dts
@@ -0,0 +1,166 @@
+/dts-v1/;
+
+#include "bcm2708.dtsi"
+
+/ {
+       compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
+       model = "Raspberry Pi Zero W";
+
+       chosen {
+               bootargs = "8250.nr_uarts=1";
+       };
+
+       aliases {
+               serial0 = &uart1;
+               serial1 = &uart0;
+       };
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       sdio_pins: sdio_pins {
+               brcm,pins = <34 35 36 37 38 39>;
+               brcm,function = <7>; /* ALT3 = SD1 */
+               brcm,pull = <0 2 2 2 2 2>;
+       };
+
+       bt_pins: bt_pins {
+               brcm,pins = <43>;
+               brcm,function = <4>; /* alt0:GPCLK2 */
+               brcm,pull = <0>; /* none */
+       };
+
+       uart0_pins: uart0_pins {
+               brcm,pins = <30 31 32 33>;
+               brcm,function = <7>; /* alt3=UART0 */
+               brcm,pull = <2 0 0 2>; /* up none none up */
+       };
+
+       uart1_pins: uart1_pins {
+               brcm,pins;
+               brcm,function;
+               brcm,pull;
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <>;
+               brcm,function = <>;
+       };
+};
+
+&mmc {
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdio_pins>;
+       non-removable;
+       bus-width = <4>;
+       status = "okay";
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pins &bt_pins>;
+       status = "okay";
+};
+
+&uart1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart1_pins>;
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       #sound-dai-cells = <0>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&random {
+       status = "okay";
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 47 0>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
@@ -0,0 +1,122 @@
+/dts-v1/;
+
+#include "bcm2708.dtsi"
+#include "bcm283x-rpi-smsc9514.dtsi"
+
+/ {
+       model = "Raspberry Pi Model B+";
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <40 45>;
+               brcm,function = <4>;
+       };
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 47 0>;
+       };
+
+       pwr_led: pwr {
+               label = "led1";
+               linux,default-trigger = "input";
+               gpios = <&gpio 35 0>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+
+               pwr_led_gpio = <&pwr_led>,"gpios:4";
+               pwr_led_activelow = <&pwr_led>,"gpios:8";
+               pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
@@ -0,0 +1,112 @@
+/dts-v1/;
+
+#include "bcm2708.dtsi"
+#include "bcm283x-rpi-smsc9512.dtsi"
+
+/ {
+       model = "Raspberry Pi Model B";
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <28 29 30 31>;
+               brcm,function = <6>; /* alt2 */
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <40 45>;
+               brcm,function = <4>;
+       };
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 16 1>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
@@ -0,0 +1,95 @@
+/dts-v1/;
+
+#include "bcm2708-rpi-cm.dtsi"
+
+/ {
+       model = "Raspberry Pi Compute Module";
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins;
+               brcm,function;
+       };
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
@@ -0,0 +1,17 @@
+#include "bcm2708.dtsi"
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 47 0>;
+       };
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708-rpi.dtsi
@@ -0,0 +1,159 @@
+/* Downstream version of bcm2835-rpi.dtsi */
+
+#include <dt-bindings/power/raspberrypi-power.h>
+
+/ {
+       memory {
+               device_type = "memory";
+               reg = <0x0 0x0>;
+       };
+
+       aliases {
+               audio = &audio;
+               aux = &aux;
+               sound = &sound;
+               soc = &soc;
+               dma = &dma;
+               intc = &intc;
+               watchdog = &watchdog;
+               random = &random;
+               mailbox = &mailbox;
+               gpio = &gpio;
+               uart0 = &uart0;
+               sdhost = &sdhost;
+               mmc0 = &sdhost;
+               i2s = &i2s;
+               spi0 = &spi0;
+               i2c0 = &i2c0;
+               uart1 = &uart1;
+               spi1 = &spi1;
+               spi2 = &spi2;
+               mmc = &mmc;
+               mmc1 = &mmc;
+               i2c1 = &i2c1;
+               i2c2 = &i2c2;
+               usb = &usb;
+               leds = &leds;
+               fb = &fb;
+               thermal = &thermal;
+               axiperf = &axiperf;
+       };
+
+       leds: leds {
+               compatible = "gpio-leds";
+       };
+
+       soc {
+               gpiomem {
+                       compatible = "brcm,bcm2835-gpiomem";
+                       reg = <0x7e200000 0x1000>;
+               };
+
+               firmware: firmware {
+                       compatible = "raspberrypi,bcm2835-firmware";
+                       mboxes = <&mailbox>;
+               };
+
+               power: power {
+                       compatible = "raspberrypi,bcm2835-power";
+                       firmware = <&firmware>;
+                       #power-domain-cells = <1>;
+               };
+
+               fb: fb {
+                       compatible = "brcm,bcm2708-fb";
+                       firmware = <&firmware>;
+                       status = "disabled";
+               };
+
+               mailbox@7e00b840 {
+                       compatible = "brcm,bcm2835-vchiq";
+                       reg = <0x7e00b840 0x3c>;
+                       interrupts = <0 2>;
+               };
+
+               vcsm: vcsm {
+                       compatible = "raspberrypi,bcm2835-vcsm";
+                       firmware = <&firmware>;
+                       status = "okay";
+               };
+
+               /* Onboard audio */
+               audio: audio {
+                       compatible = "brcm,bcm2835-audio";
+                       brcm,pwm-channels = <8>;
+                       status = "disabled";
+               };
+
+               /* External sound card */
+               sound: sound {
+                       status = "disabled";
+               };
+       };
+
+       __overrides__ {
+               cache_line_size;
+
+               uart0 = <&uart0>,"status";
+               uart1 = <&uart1>,"status";
+               i2s = <&i2s>,"status";
+               spi = <&spi0>,"status";
+               i2c0 = <&i2c0>,"status";
+               i2c1 = <&i2c1>,"status";
+               i2c2_iknowwhatimdoing = <&i2c2>,"status";
+               i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+               i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+               i2c2_baudrate = <&i2c2>,"clock-frequency:0";
+
+               audio = <&audio>,"status";
+               watchdog = <&watchdog>,"status";
+               random = <&random>,"status";
+               sd_overclock = <&sdhost>,"brcm,overclock-50:0";
+               sd_force_pio = <&sdhost>,"brcm,force-pio?";
+               sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
+               sd_debug     = <&sdhost>,"brcm,debug";
+               sdio_overclock = <&mmc>,"brcm,overclock-50:0";
+               axiperf      = <&axiperf>,"status";
+       };
+};
+
+&dma {
+       brcm,dma-channel-mask = <0x7f34>;
+};
+
+&hdmi {
+       power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
+};
+
+&usb {
+       power-domains = <&power RPI_POWER_DOMAIN_USB>;
+};
+
+&clocks {
+       firmware = <&firmware>;
+};
+
+sdhost_pins: &sdhost_gpio48 {
+       /* Add alias */
+};
+
+&sdhost {
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdhost_gpio48>;
+       bus-width = <4>;
+       brcm,overclock-50 = <0>;
+       brcm,pio-limit = <1>;
+       status = "okay";
+};
+
+&fb {
+       status = "okay";
+};
+
+&cpu_thermal {
+       /delete-node/ trips;
+};
+
+&vec {
+       status = "disabled";
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2708.dtsi
@@ -0,0 +1,11 @@
+#include "bcm2835.dtsi"
+#include "bcm270x.dtsi"
+#include "bcm2708-rpi.dtsi"
+
+/ {
+       /delete-node/ cpus;
+
+       __overrides__ {
+               arm_freq;
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
@@ -0,0 +1,123 @@
+/dts-v1/;
+
+#include "bcm2709.dtsi"
+#include "bcm283x-rpi-smsc9514.dtsi"
+
+/ {
+       compatible = "raspberrypi,2-model-b", "brcm,bcm2836";
+       model = "Raspberry Pi 2 Model B";
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <40 45>;
+               brcm,function = <4>;
+       };
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 47 0>;
+       };
+
+       pwr_led: pwr {
+               label = "led1";
+               linux,default-trigger = "input";
+               gpios = <&gpio 35 0>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+
+               pwr_led_gpio = <&pwr_led>,"gpios:4";
+               pwr_led_activelow = <&pwr_led>,"gpios:8";
+               pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2709.dtsi
@@ -0,0 +1,19 @@
+#include "bcm2836.dtsi"
+#include "bcm270x.dtsi"
+#include "bcm2708-rpi.dtsi"
+
+/ {
+       soc {
+               ranges = <0x7e000000 0x3f000000 0x01000000>,
+                        <0x40000000 0x40000000 0x00040000>;
+
+               /delete-node/ timer@7e003000;
+       };
+
+       __overrides__ {
+               arm_freq = <&v7_cpu0>, "clock-frequency:0",
+                          <&v7_cpu1>, "clock-frequency:0",
+                          <&v7_cpu2>, "clock-frequency:0",
+                          <&v7_cpu3>, "clock-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm270x.dtsi
@@ -0,0 +1,152 @@
+/* Downstream bcm283x.dtsi diff */
+#include <dt-bindings/power/raspberrypi-power.h>
+
+/ {
+       chosen {
+               bootargs = "";
+               /delete-property/ stdout-path;
+       };
+
+       soc: soc {
+
+               watchdog: watchdog@7e100000 {
+                       /* Add alias */
+               };
+
+               random: rng@7e104000 {
+                       /* Add alias */
+               };
+
+               gpio@7e200000 { /* gpio */
+                       interrupts = <2 17>, <2 18>;
+               };
+
+               serial@7e201000 { /* uart0 */
+                       /* Enable CTS bug workaround */
+                       cts-event-workaround;
+               };
+
+               i2s@7e203000 { /* i2s */
+                       #sound-dai-cells = <0>;
+                       reg = <0x7e203000 0x24>;
+                       clocks = <&clocks BCM2835_CLOCK_PCM>;
+               };
+
+               spi0: spi@7e204000 {
+                       /* Add alias */
+                       dmas = <&dma 6>, <&dma 7>;
+                       dma-names = "tx", "rx";
+               };
+
+               pixelvalve0: pixelvalve@7e206000 {
+                       /* Add alias */
+                       status = "disabled";
+               };
+
+               pixelvalve1: pixelvalve@7e207000 {
+                       /* Add alias */
+                       status = "disabled";
+               };
+
+               dpi: dpi@7e208000 {
+                       compatible = "brcm,bcm2835-dpi";
+                       reg = <0x7e208000 0x8c>;
+                       clocks = <&clocks BCM2835_CLOCK_VPU>,
+                                <&clocks BCM2835_CLOCK_DPI>;
+                       clock-names = "core", "pixel";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "disabled";
+               };
+
+               /delete-node/ sdhci@7e300000;
+
+               mmc: mmc@7e300000 {
+                       compatible = "brcm,bcm2835-mmc", "brcm,bcm2835-sdhci";
+                       reg = <0x7e300000 0x100>;
+                       interrupts = <2 30>;
+                       clocks = <&clocks BCM2835_CLOCK_EMMC>;
+                       dmas = <&dma 11>;
+                       dma-names = "rx-tx";
+                       brcm,overclock-50 = <0>;
+                       status = "disabled";
+               };
+
+               hvs: hvs@7e400000 {
+                       /* Add alias */
+                       status = "disabled";
+               };
+
+               firmwarekms: firmwarekms@7e600000 {
+                       compatible = "raspberrypi,rpi-firmware-kms";
+                       /* SMI interrupt reg */
+                       reg = <0x7e600000 0x100>;
+                       interrupts = <2 16>;
+                       brcm,firmware = <&firmware>;
+                       status = "disabled";
+               };
+
+               smi: smi@7e600000 {
+                       compatible = "brcm,bcm2835-smi";
+                       reg = <0x7e600000 0x100>;
+                       interrupts = <2 16>;
+                       clocks = <&clocks BCM2835_CLOCK_SMI>;
+                       assigned-clocks = <&clocks BCM2835_CLOCK_SMI>;
+                       assigned-clock-rates = <125000000>;
+                       dmas = <&dma 4>;
+                       dma-names = "rx-tx";
+                       status = "disabled";
+               };
+
+               pixelvalve2: pixelvalve@7e807000 {
+                       /* Add alias */
+                       status = "disabled";
+               };
+
+               hdmi@7e902000 { /* hdmi */
+                       status = "disabled";
+               };
+
+               usb@7e980000 { /* usb */
+                       compatible = "brcm,bcm2708-usb";
+                       reg = <0x7e980000 0x10000>,
+                             <0x7e006000 0x1000>;
+                       interrupts = <2 0>,
+                                    <1 9>;
+               };
+
+               v3d@7ec00000 { /* vd3 */
+                       compatible = "brcm,vc4-v3d";
+                       power-domains = <&power RPI_POWER_DOMAIN_V3D>;
+                       status = "disabled";
+               };
+
+               axiperf: axiperf {
+                       compatible = "brcm,bcm2835-axiperf";
+                       reg = <0x7e009800 0x100>,
+                             <0x7ee08000 0x100>;
+                       firmware = <&firmware>;
+                       status = "disabled";
+               };
+       };
+
+       vdd_5v0_reg: fixedregulator_5v0 {
+               compatible = "regulator-fixed";
+               regulator-name = "5v0";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               regulator-always-on;
+       };
+
+       vdd_3v3_reg: fixedregulator_3v3 {
+               compatible = "regulator-fixed";
+               regulator-name = "3v3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+       };
+};
+
+&vc4 {
+       status = "disabled";
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2710-rpi-3-b-plus.dts
@@ -0,0 +1,183 @@
+/dts-v1/;
+
+#include "bcm2710.dtsi"
+#include "bcm283x-rpi-lan7515.dtsi"
+
+/ {
+       compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
+       model = "Raspberry Pi 3 Model B+";
+
+       chosen {
+               bootargs = "8250.nr_uarts=1";
+       };
+
+       aliases {
+               serial0 = &uart1;
+               serial1 = &uart0;
+       };
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       sdio_pins: sdio_pins {
+               brcm,pins =     <34 35 36 37 38 39>;
+               brcm,function = <7>; // alt3 = SD1
+               brcm,pull =     <0 2 2 2 2 2>;
+       };
+
+       bt_pins: bt_pins {
+               brcm,pins = <43>;
+               brcm,function = <4>; /* alt0:GPCLK2 */
+               brcm,pull = <0>;
+       };
+
+       uart0_pins: uart0_pins {
+               brcm,pins = <32 33>;
+               brcm,function = <7>; /* alt3=UART0 */
+               brcm,pull = <0 2>;
+       };
+
+       uart1_pins: uart1_pins {
+               brcm,pins;
+               brcm,function;
+               brcm,pull;
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <40 41>;
+               brcm,function = <4>;
+       };
+};
+
+&mmc {
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdio_pins>;
+       non-removable;
+       bus-width = <4>;
+       status = "okay";
+       brcm,overclock-50 = <0>;
+};
+
+&soc {
+       expgpio: expgpio {
+               compatible = "brcm,bcm2835-expgpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               firmware = <&firmware>;
+               status = "okay";
+       };
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pins &bt_pins>;
+       status = "okay";
+};
+
+&uart1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart1_pins>;
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&gpio 29 0>;
+       };
+
+       pwr_led: pwr {
+               label = "led1";
+               linux,default-trigger = "default-on";
+               gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+
+               pwr_led_gpio = <&pwr_led>,"gpios:4";
+               pwr_led_activelow = <&pwr_led>,"gpios:8";
+               pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2710-rpi-3-b.dts
@@ -0,0 +1,191 @@
+/dts-v1/;
+
+#include "bcm2710.dtsi"
+#include "bcm283x-rpi-smsc9514.dtsi"
+
+/ {
+       compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
+       model = "Raspberry Pi 3 Model B";
+
+       chosen {
+               bootargs = "8250.nr_uarts=1";
+       };
+
+       aliases {
+               serial0 = &uart1;
+               serial1 = &uart0;
+       };
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       sdio_pins: sdio_pins {
+               brcm,pins =     <34 35 36 37 38 39>;
+               brcm,function = <7>; // alt3 = SD1
+               brcm,pull =     <0 2 2 2 2 2>;
+       };
+
+       bt_pins: bt_pins {
+               brcm,pins = <43>;
+               brcm,function = <4>; /* alt0:GPCLK2 */
+               brcm,pull = <0>;
+       };
+
+       uart0_pins: uart0_pins {
+               brcm,pins = <32 33>;
+               brcm,function = <7>; /* alt3=UART0 */
+               brcm,pull = <0 2>;
+       };
+
+       uart1_pins: uart1_pins {
+               brcm,pins;
+               brcm,function;
+               brcm,pull;
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins = <40 41>;
+               brcm,function = <4>;
+       };
+};
+
+&mmc {
+       pinctrl-names = "default";
+       pinctrl-0 = <&sdio_pins>;
+       non-removable;
+       bus-width = <4>;
+       status = "okay";
+       brcm,overclock-50 = <0>;
+};
+
+&soc {
+       virtgpio: virtgpio {
+               compatible = "brcm,bcm2835-virtgpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               firmware = <&firmware>;
+               status = "okay";
+       };
+
+       expgpio: expgpio {
+               compatible = "brcm,bcm2835-expgpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               firmware = <&firmware>;
+               status = "okay";
+       };
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pins &bt_pins>;
+       status = "okay";
+};
+
+&uart1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart1_pins>;
+       status = "okay";
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&virtgpio 0 0>;
+       };
+
+       pwr_led: pwr {
+               label = "led1";
+               linux,default-trigger = "input";
+               gpios = <&expgpio 7 0>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+
+               pwr_led_gpio = <&pwr_led>,"gpios:4";
+               pwr_led_activelow = <&pwr_led>,"gpios:8";
+               pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2710-rpi-cm3.dts
@@ -0,0 +1,129 @@
+/dts-v1/;
+
+#include "bcm2710.dtsi"
+
+/ {
+       model = "Raspberry Pi Compute Module 3";
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&gpio {
+       spi0_pins: spi0_pins {
+               brcm,pins = <9 10 11>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       spi0_cs_pins: spi0_cs_pins {
+               brcm,pins = <8 7>;
+               brcm,function = <1>; /* output */
+       };
+
+       i2c0_pins: i2c0 {
+               brcm,pins = <0 1>;
+               brcm,function = <4>;
+       };
+
+       i2c1_pins: i2c1 {
+               brcm,pins = <2 3>;
+               brcm,function = <4>;
+       };
+
+       i2s_pins: i2s {
+               brcm,pins = <18 19 20 21>;
+               brcm,function = <4>; /* alt0 */
+       };
+
+       audio_pins: audio_pins {
+               brcm,pins;
+               brcm,function;
+       };
+};
+
+&soc {
+       virtgpio: virtgpio {
+               compatible = "brcm,bcm2835-virtgpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               firmware = <&firmware>;
+               status = "okay";
+       };
+
+       expgpio: expgpio {
+               compatible = "brcm,bcm2835-expgpio";
+               gpio-controller;
+               #gpio-cells = <2>;
+               firmware = <&firmware>;
+               status = "okay";
+       };
+};
+
+&spi0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+       spidev0: spidev@0{
+               compatible = "spidev";
+               reg = <0>;      /* CE0 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+
+       spidev1: spidev@1{
+               compatible = "spidev";
+               reg = <1>;      /* CE1 */
+               #address-cells = <1>;
+               #size-cells = <0>;
+               spi-max-frequency = <125000000>;
+       };
+};
+
+&i2c0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c0_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2c1_pins>;
+       clock-frequency = <100000>;
+};
+
+&i2c2 {
+       clock-frequency = <100000>;
+};
+
+&i2s {
+       pinctrl-names = "default";
+       pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+       act_led: act {
+               label = "led0";
+               linux,default-trigger = "mmc0";
+               gpios = <&virtgpio 0 0>;
+       };
+};
+
+&hdmi {
+       hpd-gpios = <&expgpio 0 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+       pinctrl-names = "default";
+       pinctrl-0 = <&audio_pins>;
+};
+
+/ {
+       __overrides__ {
+               act_led_gpio = <&act_led>,"gpios:4";
+               act_led_activelow = <&act_led>,"gpios:8";
+               act_led_trigger = <&act_led>,"linux,default-trigger";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2710.dtsi
@@ -0,0 +1,29 @@
+#include "bcm2837.dtsi"
+#include "bcm270x.dtsi"
+#include "bcm2708-rpi.dtsi"
+
+/ {
+       compatible = "brcm,bcm2837", "brcm,bcm2836";
+
+       soc {
+
+               arm-pmu {
+#ifdef RPI364
+                       compatible = "arm,armv8-pmuv3", "arm,cortex-a7-pmu";
+#else
+                       compatible = "arm,cortex-a7-pmu";
+#endif
+                       interrupt-parent = <&local_intc>;
+                       interrupts = <9 IRQ_TYPE_LEVEL_HIGH>;
+               };
+
+               /delete-node/ timer@7e003000;
+       };
+
+       __overrides__ {
+               arm_freq = <&cpu0>, "clock-frequency:0",
+                      <&cpu1>, "clock-frequency:0",
+                      <&cpu2>, "clock-frequency:0",
+                      <&cpu3>, "clock-frequency:0";
+       };
+};
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -32,7 +32,7 @@
 
                mailbox@7e00b840 {
                        compatible = "brcm,bcm2835-vchiq";
-                       reg = <0x7e00b840 0xf>;
+                       reg = <0x7e00b840 0x3c>;
                        interrupts = <0 2>;
                };
        };
--- a/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
+++ b/arch/arm/boot/dts/bcm283x-rpi-lan7515.dtsi
@@ -21,7 +21,24 @@
                        ethernet: ethernet@1 {
                                compatible = "usb424,7800";
                                reg = <1>;
+                               microchip,eee-enabled;
+                               microchip,tx-lpi-timer = <600>; /* non-aggressive*/
+                               /*
+                                * led0 = 1:link1000/activity
+                                * led1 = 6:link10/100/activity
+                                */
+                               microchip,led-modes = <1 6>;
                        };
                };
        };
 };
+
+
+/ {
+       __overrides__ {
+               eee = <&ethernet>,"microchip,eee-enabled?";
+               tx_lpi_timer = <&ethernet>,"microchip,tx-lpi-timer:0";
+               eth_led0 = <&ethernet>,"microchip,led-modes:0";
+               eth_led1 = <&ethernet>,"microchip,led-modes:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -0,0 +1,145 @@
+# Overlays for the Raspberry Pi platform
+
+dtbo-$(CONFIG_ARCH_BCM2835) += \
+       adau1977-adc.dtbo \
+       adau7002-simple.dtbo \
+       ads1015.dtbo \
+       ads1115.dtbo \
+       ads7846.dtbo \
+       akkordion-iqdacplus.dtbo \
+       allo-boss-dac-pcm512x-audio.dtbo \
+       allo-digione.dtbo \
+       allo-katana-dac-audio.dtbo \
+       allo-piano-dac-pcm512x-audio.dtbo \
+       allo-piano-dac-plus-pcm512x-audio.dtbo \
+       applepi-dac.dtbo \
+       at86rf233.dtbo \
+       audioinjector-addons.dtbo \
+       audioinjector-wm8731-audio.dtbo \
+       audremap.dtbo \
+       balena-fin.dtbo \
+       bmp085_i2c-sensor.dtbo \
+       dht11.dtbo \
+       dionaudio-loco.dtbo \
+       dionaudio-loco-v2.dtbo \
+       dpi18.dtbo \
+       dpi24.dtbo \
+       dwc-otg.dtbo \
+       dwc2.dtbo \
+       enc28j60.dtbo \
+       enc28j60-spi2.dtbo \
+       exc3000.dtbo \
+       fe-pi-audio.dtbo \
+       goodix.dtbo \
+       googlevoicehat-soundcard.dtbo \
+       gpio-ir.dtbo \
+       gpio-ir-tx.dtbo \
+       gpio-key.dtbo \
+       gpio-no-irq.dtbo \
+       gpio-poweroff.dtbo \
+       gpio-shutdown.dtbo \
+       hifiberry-amp.dtbo \
+       hifiberry-dac.dtbo \
+       hifiberry-dacplus.dtbo \
+       hifiberry-digi.dtbo \
+       hifiberry-digi-pro.dtbo \
+       hy28a.dtbo \
+       hy28b.dtbo \
+       i2c-bcm2708.dtbo \
+       i2c-gpio.dtbo \
+       i2c-mux.dtbo \
+       i2c-pwm-pca9685a.dtbo \
+       i2c-rtc.dtbo \
+       i2c-rtc-gpio.dtbo \
+       i2c-sensor.dtbo \
+       i2c0-bcm2708.dtbo \
+       i2c1-bcm2708.dtbo \
+       i2s-gpio28-31.dtbo \
+       iqaudio-dac.dtbo \
+       iqaudio-dacplus.dtbo \
+       iqaudio-digi-wm8804-audio.dtbo \
+       jedec-spi-nor.dtbo \
+       justboom-dac.dtbo \
+       justboom-digi.dtbo \
+       lirc-rpi.dtbo \
+       ltc294x.dtbo \
+       mbed-dac.dtbo \
+       mcp23017.dtbo \
+       mcp23s17.dtbo \
+       mcp2515-can0.dtbo \
+       mcp2515-can1.dtbo \
+       mcp3008.dtbo \
+       mcp3202.dtbo \
+       media-center.dtbo \
+       midi-uart0.dtbo \
+       midi-uart1.dtbo \
+       mmc.dtbo \
+       mpu6050.dtbo \
+       mz61581.dtbo \
+       papirus.dtbo \
+       pi3-act-led.dtbo \
+       pi3-disable-bt.dtbo \
+       pi3-disable-wifi.dtbo \
+       pi3-miniuart-bt.dtbo \
+       pibell.dtbo \
+       piscreen.dtbo \
+       piscreen2r.dtbo \
+       pisound.dtbo \
+       pitft22.dtbo \
+       pitft28-capacitive.dtbo \
+       pitft28-resistive.dtbo \
+       pitft35-resistive.dtbo \
+       pps-gpio.dtbo \
+       pwm.dtbo \
+       pwm-2chan.dtbo \
+       pwm-ir-tx.dtbo \
+       qca7000.dtbo \
+       rotary-encoder.dtbo \
+       rpi-backlight.dtbo \
+       rpi-cirrus-wm5102.dtbo \
+       rpi-dac.dtbo \
+       rpi-display.dtbo \
+       rpi-ft5406.dtbo \
+       rpi-proto.dtbo \
+       rpi-sense.dtbo \
+       rpi-tv.dtbo \
+       rra-digidac1-wm8741-audio.dtbo \
+       sc16is750-i2c.dtbo \
+       sc16is752-i2c.dtbo \
+       sc16is752-spi1.dtbo \
+       sdhost.dtbo \
+       sdio.dtbo \
+       sdio-1bit.dtbo \
+       sdtweak.dtbo \
+       smi.dtbo \
+       smi-dev.dtbo \
+       smi-nand.dtbo \
+       spi-gpio35-39.dtbo \
+       spi-rtc.dtbo \
+       spi0-cs.dtbo \
+       spi0-hw-cs.dtbo \
+       spi1-1cs.dtbo \
+       spi1-2cs.dtbo \
+       spi1-3cs.dtbo \
+       spi2-1cs.dtbo \
+       spi2-2cs.dtbo \
+       spi2-3cs.dtbo \
+       superaudioboard.dtbo \
+       sx150x.dtbo \
+       tinylcd35.dtbo \
+       uart0.dtbo \
+       uart1.dtbo \
+       upstream.dtbo \
+       upstream-aux-interrupt.dtbo \
+       vc4-fkms-v3d.dtbo \
+       vc4-kms-v3d.dtbo \
+       vga666.dtbo \
+       w1-gpio.dtbo \
+       w1-gpio-pullup.dtbo \
+       wittypi.dtbo
+
+targets += dtbs dtbs_install
+targets += $(dtbo-y)
+
+always         := $(dtbo-y)
+clean-files    := *.dtbo
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/README
@@ -0,0 +1,1952 @@
+Introduction
+============
+
+This directory contains Device Tree overlays. Device Tree makes it possible
+to support many hardware configurations with a single kernel and without the
+need to explicitly load or blacklist kernel modules. Note that this isn't a
+"pure" Device Tree configuration (c.f. MACH_BCM2835) - some on-board devices
+are still configured by the board support code, but the intention is to
+eventually reach that goal.
+
+On Raspberry Pi, Device Tree usage is controlled from /boot/config.txt. By
+default, the Raspberry Pi kernel boots with device tree enabled. You can
+completely disable DT usage (for now) by adding:
+
+    device_tree=
+
+to your config.txt, which should cause your Pi to revert to the old way of
+doing things after a reboot.
+
+In /boot you will find a .dtb for each base platform. This describes the
+hardware that is part of the Raspberry Pi board. The loader (start.elf and its
+siblings) selects the .dtb file appropriate for the platform by name, and reads
+it into memory. At this point, all of the optional interfaces (i2c, i2s, spi)
+are disabled, but they can be enabled using Device Tree parameters:
+
+    dtparam=i2c=on,i2s=on,spi=on
+
+However, this shouldn't be necessary in many use cases because loading an
+overlay that requires one of those interfaces will cause it to be enabled
+automatically, and it is advisable to only enable interfaces if they are
+needed.
+
+Configuring additional, optional hardware is done using Device Tree overlays
+(see below).
+
+GPIO numbering uses the hardware pin numbering scheme (aka BCM scheme) and
+not the physical pin numbers.
+
+raspi-config
+============
+
+The Advanced Options section of the raspi-config utility can enable and disable
+Device Tree use, as well as toggling the I2C and SPI interfaces. Note that it
+is possible to both enable an interface and blacklist the driver, if for some
+reason you should want to defer the loading.
+
+Modules
+=======
+
+As well as describing the hardware, Device Tree also gives enough information
+to allow suitable driver modules to be located and loaded, with the corollary
+that unneeded modules are not loaded. As a result it should be possible to
+remove lines from /etc/modules, and /etc/modprobe.d/raspi-blacklist.conf can
+have its contents deleted (or commented out).
+
+Using Overlays
+==============
+
+Overlays are loaded using the "dtoverlay" directive. As an example, consider
+the popular lirc-rpi module, the Linux Infrared Remote Control driver. In the
+pre-DT world this would be loaded from /etc/modules, with an explicit
+"modprobe lirc-rpi" command, or programmatically by lircd. With DT enabled,
+this becomes a line in config.txt:
+
+    dtoverlay=lirc-rpi
+
+This causes the file /boot/overlays/lirc-rpi.dtbo to be loaded. By
+default it will use GPIOs 17 (out) and 18 (in), but this can be modified using
+DT parameters:
+
+    dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
+
+Parameters always have default values, although in some cases (e.g. "w1-gpio")
+it is necessary to provided multiple overlays in order to get the desired
+behaviour. See the list of overlays below for a description of the parameters
+and their defaults.
+
+The Overlay and Parameter Reference
+===================================
+
+N.B. When editing this file, please preserve the indentation levels to make it
+simple to parse programmatically. NO HARD TABS.
+
+
+Name:   <The base DTB>
+Info:   Configures the base Raspberry Pi hardware
+Load:   <loaded automatically>
+Params:
+        audio                   Set to "on" to enable the onboard ALSA audio
+                                interface (default "off")
+
+        eee                     Enable Energy Efficient Ethernet support for
+                                compatible devices (default "on"). See also
+                                "tx_lpi_timer".
+
+        eth_led0                Set mode of LED0 (usually orange) (default
+                                "1"). The legal values are:
+                                0=link/activity          1=link1000/activity
+                                2=link100/activity       3=link10/activity
+                                4=link100/1000/activity  5=link10/1000/activity
+                                6=link10/100/activity    14=off    15=on
+
+        eth_led1                Set mode of LED1 (usually green) (default
+                                "6"). See eth_led0 for legal values.
+
+        i2c_arm                 Set to "on" to enable the ARM's i2c interface
+                                (default "off")
+
+        i2c_vc                  Set to "on" to enable the i2c interface
+                                usually reserved for the VideoCore processor
+                                (default "off")
+
+        i2c                     An alias for i2c_arm
+
+        i2c_arm_baudrate        Set the baudrate of the ARM's i2c interface
+                                (default "100000")
+
+        i2c_vc_baudrate         Set the baudrate of the VideoCore i2c interface
+                                (default "100000")
+
+        i2c_baudrate            An alias for i2c_arm_baudrate
+
+        i2s                     Set to "on" to enable the i2s interface
+                                (default "off")
+
+        spi                     Set to "on" to enable the spi interfaces
+                                (default "off")
+
+        random                  Set to "on" to enable the hardware random
+                                number generator (default "on")
+
+        sd_overclock            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
+
+        sd_force_pio            Disable DMA support for SD driver (default off)
+
+        sd_pio_limit            Number of blocks above which to use DMA for
+                                SD card (default 1)
+
+        sd_debug                Enable debug output from SD driver (default off)
+
+        sdio_overclock          Clock (in MHz) to use when the MMC framework
+                                requests 50MHz for the SDIO/WiFi interface.
+
+        tx_lpi_timer            Set the delay in microseconds between going idle
+                                and entering the low power state (default 600).
+                                Requires EEE to be enabled - see "eee".
+
+        uart0                   Set to "off" to disable uart0 (default "on")
+
+        uart1                   Set to "on" or "off" to enable or disable uart1
+                                (default varies)
+
+        watchdog                Set to "on" to enable the hardware watchdog
+                                (default "off")
+
+        act_led_trigger         Choose which activity the LED tracks.
+                                Use "heartbeat" for a nice load indicator.
+                                (default "mmc")
+
+        act_led_activelow       Set to "on" to invert the sense of the LED
+                                (default "off")
+                                N.B. For Pi3 see pi3-act-led overlay.
+
+        act_led_gpio            Set which GPIO to use for the activity LED
+                                (in case you want to connect it to an external
+                                device)
+                                (default "16" on a non-Plus board, "47" on a
+                                Plus or Pi 2)
+                                N.B. For Pi3 see pi3-act-led overlay.
+
+        pwr_led_trigger
+        pwr_led_activelow
+        pwr_led_gpio
+                                As for act_led_*, but using the PWR LED.
+                                Not available on Model A/B boards.
+
+        N.B. It is recommended to only enable those interfaces that are needed.
+        Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc
+        interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.)
+        Note also that i2c, i2c_arm and i2c_vc are aliases for the physical
+        interfaces i2c0 and i2c1. Use of the numeric variants is still possible
+        but deprecated because the ARM/VC assignments differ between board
+        revisions. The same board-specific mapping applies to i2c_baudrate,
+        and the other i2c baudrate parameters.
+
+
+Name:   adau1977-adc
+Info:   Overlay for activation of ADAU1977 ADC codec over I2C for control
+        and I2S for data.
+Load:   dtoverlay=adau1977-adc
+Params: <None>
+
+
+Name:   adau7002-simple
+Info:   Overlay for the activation of ADAU7002 stereo PDM to I2S converter.
+Load:   dtoverlay=adau7002-simple,<param>=<val>
+Params: card-name               Override the default, "adau7002", card name.
+
+
+Name:   ads1015
+Info:   Overlay for activation of Texas Instruments ADS1015 ADC over I2C
+Load:   dtoverlay=ads1015,<param>=<val>
+Params: addr                    I2C bus address of device. Set based on how the
+                                addr pin is wired. (default=0x48 assumes addr
+                                is pulled to GND)
+        cha_enable              Enable virtual channel a. (default=true)
+        cha_cfg                 Set the configuration for virtual channel a.
+                                (default=4 configures this channel for the
+                                voltage at A0 with respect to GND)
+        cha_datarate            Set the datarate (samples/sec) for this channel.
+                                (default=4 sets 1600 sps)
+        cha_gain                Set the gain of the Programmable Gain
+                                Amplifier for this channel. (default=2 sets the
+                                full scale of the channel to 2.048 Volts)
+
+        Channel (ch) parameters can be set for each enabled channel.
+        A maximum of 4 channels can be enabled (letters a thru d).
+        For more information refer to the device datasheet at:
+        http://www.ti.com/lit/ds/symlink/ads1015.pdf
+
+
+Name:   ads1115
+Info:   Texas Instruments ADS1115 ADC
+Load:   dtoverlay=ads1115,<param>[=<val>]
+Params: addr                    I2C bus address of device. Set based on how the
+                                addr pin is wired. (default=0x48 assumes addr
+                                is pulled to GND)
+        cha_enable              Enable virtual channel a.
+        cha_cfg                 Set the configuration for virtual channel a.
+                                (default=4 configures this channel for the
+                                voltage at A0 with respect to GND)
+        cha_datarate            Set the datarate (samples/sec) for this channel.
+                                (default=7 sets 860 sps)
+        cha_gain                Set the gain of the Programmable Gain
+                                Amplifier for this channel. (Default 1 sets the
+                                full scale of the channel to 4.096 Volts)
+
+        Channel parameters can be set for each enabled channel.
+        A maximum of 4 channels can be enabled (letters a thru d).
+        For more information refer to the device datasheet at:
+        http://www.ti.com/lit/ds/symlink/ads1115.pdf
+
+
+Name:   ads7846
+Info:   ADS7846 Touch controller
+Load:   dtoverlay=ads7846,<param>=<val>
+Params: cs                      SPI bus Chip Select (default 1)
+        speed                   SPI bus speed (default 2MHz, max 3.25MHz)
+        penirq                  GPIO used for PENIRQ. REQUIRED
+        penirq_pull             Set GPIO pull (default 0=none, 2=pullup)
+        swapxy                  Swap x and y axis
+        xmin                    Minimum value on the X axis (default 0)
+        ymin                    Minimum value on the Y axis (default 0)
+        xmax                    Maximum value on the X axis (default 4095)
+        ymax                    Maximum value on the Y axis (default 4095)
+        pmin                    Minimum reported pressure value (default 0)
+        pmax                    Maximum reported pressure value (default 65535)
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+                                (default 400)
+
+        penirq is required and usually xohms (60-100) has to be set as well.
+        Apart from that, pmax (255) and swapxy are also common.
+        The rest of the calibration can be done with xinput-calibrator.
+        See: github.com/notro/fbtft/wiki/FBTFT-on-Raspian
+        Device Tree binding document:
+        www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
+
+
+Name:   akkordion-iqdacplus
+Info:   Configures the Digital Dreamtime Akkordion Music Player (based on the
+        OEM IQAudIO DAC+ or DAC Zero module).
+Load:   dtoverlay=akkordion-iqdacplus,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                dtoverlay=akkordion-iqdacplus,24db_digital_gain
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
+Name:   allo-boss-dac-pcm512x-audio
+Info:   Configures the Allo Boss DAC audio cards.
+Load:   dtoverlay=allo-boss-dac-pcm512x-audio,<param>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=allo-boss-dac-pcm512x-audio,
+                                24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+        slave                   Force Boss DAC into slave mode, using Pi a
+                                master for bit clock and frame clock. Enable
+                                with "dtoverlay=allo-boss-dac-pcm512x-audio,
+                                slave"
+
+
+Name:   allo-digione
+Info:   Configures the Allo Digione audio card
+Load:   dtoverlay=allo-digione
+Params: <None>
+
+
+Name:   allo-katana-dac-audio
+Info:   Configures the Allo Katana DAC audio card
+Load:   dtoverlay=allo-katana-dac-audio
+Params: <None>
+
+
+Name:   allo-piano-dac-pcm512x-audio
+Info:   Configures the Allo Piano DAC (2.0/2.1) audio cards.
+        (NB. This initial support is for 2.0 channel audio ONLY! ie. stereo.
+        The subwoofer outputs on the Piano 2.1 are not currently supported!)
+Load:   dtoverlay=allo-piano-dac-pcm512x-audio,<param>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control.
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
+Name:   allo-piano-dac-plus-pcm512x-audio
+Info:   Configures the Allo Piano DAC (2.1) audio cards.
+Load:   dtoverlay=allo-piano-dac-plus-pcm512x-audio,<param>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control.
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+        glb_mclk                This option is only with Kali board. If enabled,
+                                MCLK for Kali is used and PLL is disabled for
+                                better voice quality. (default Off)
+
+
+Name:   applepi-dac
+Info:   Configures the Orchard Audio ApplePi-DAC audio card
+Load:   dtoverlay=applepi-dac
+Params: <None>
+
+
+Name:   at86rf233
+Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
+        connected to spi0.0
+Load:   dtoverlay=at86rf233,<param>=<val>
+Params: interrupt               GPIO used for INT (default 23)
+        reset                   GPIO used for Reset (default 24)
+        sleep                   GPIO used for Sleep (default 25)
+        speed                   SPI bus speed in Hz (default 3000000)
+        trim                    Fine tuning of the internal capacitance
+                                arrays (0=+0pF, 15=+4.5pF, default 15)
+
+
+Name:   audioinjector-addons
+Info:   Configures the audioinjector.net audio add on soundcards
+Load:   dtoverlay=audioinjector-addons,<param>=<val>
+Params: non-stop-clocks         Keeps the clocks running even when the stream
+                                is paused or stopped (default off)
+
+
+Name:   audioinjector-wm8731-audio
+Info:   Configures the audioinjector.net audio add on soundcard
+Load:   dtoverlay=audioinjector-wm8731-audio
+Params: <None>
+
+
+Name:   audremap
+Info:   Switches PWM sound output to pins 12 (Right) & 13 (Left)
+Load:   dtoverlay=audremap,<param>=<val>
+Params: swap_lr                 Reverse the channel allocation, which will also
+                                swap the audio jack outputs (default off)
+        enable_jack             Don't switch off the audio jack output
+                                (default off)
+
+
+Name:   balena-fin
+Info:   Overlay that enables WiFi, Bluetooth and the GPIO expander on the
+        Balena Fin board.
+Load:   dtoverlay=balena-fin
+Params: <None>
+
+
+Name:   bmp085_i2c-sensor
+Info:   This overlay is now deprecated - see i2c-sensor
+Load:   dtoverlay=bmp085_i2c-sensor
+Params: <None>
+
+
+Name:   dht11
+Info:   Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors
+        Also sometimes found with the part number(s) AM230x.
+Load:   dtoverlay=dht11,<param>=<val>
+Params: gpiopin                 GPIO connected to the sensor's DATA output.
+                                (default 4)
+
+
+Name:   dionaudio-loco
+Info:   Configures the Dion Audio LOCO DAC-AMP
+Load:   dtoverlay=dionaudio-loco
+Params: <None>
+
+
+Name:   dionaudio-loco-v2
+Info:   Configures the Dion Audio LOCO-V2 DAC-AMP
+Load:   dtoverlay=dionaudio-loco-v2,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=hifiberry-dacplus,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24dB_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
+Name:   dpi18
+Info:   Overlay for a generic 18-bit DPI display
+        This uses GPIOs 0-21 (so no I2C, uart etc.), and activates the output
+        2-3 seconds after the kernel has started.
+Load:   dtoverlay=dpi18
+Params: <None>
+
+
+Name:   dpi24
+Info:   Overlay for a generic 24-bit DPI display
+        This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
+        2-3 seconds after the kernel has started.
+Load:   dtoverlay=dpi24
+Params: <None>
+
+
+Name:   dwc-otg
+Info:   Selects the dwc_otg USB controller driver which has fiq support. This
+        is the default on all except the Pi Zero which defaults to dwc2.
+Load:   dtoverlay=dwc-otg
+Params: <None>
+
+
+Name:   dwc2
+Info:   Selects the dwc2 USB controller driver
+Load:   dtoverlay=dwc2,<param>=<val>
+Params: dr_mode                 Dual role mode: "host", "peripheral" or "otg"
+
+        g-rx-fifo-size          Size of rx fifo size in gadget mode
+
+        g-np-tx-fifo-size       Size of non-periodic tx fifo size in gadget
+                                mode
+
+
+[ The ds1307-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name:   enc28j60
+Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI0
+Load:   dtoverlay=enc28j60,<param>=<val>
+Params: int_pin                 GPIO used for INT (default 25)
+
+        speed                   SPI bus speed (default 12000000)
+
+
+Name:   enc28j60-spi2
+Info:   Overlay for the Microchip ENC28J60 Ethernet Controller on SPI2
+Load:   dtoverlay=enc28j60-spi2,<param>=<val>
+Params: int_pin                 GPIO used for INT (default 39)
+
+        speed                   SPI bus speed (default 12000000)
+
+
+Name:   exc3000
+Info:   Enables I2C connected EETI EXC3000 multiple touch controller using
+        GPIO 4 (pin 7 on GPIO header) for interrupt.
+Load:   dtoverlay=exc3000,<param>=<val>
+Params: interrupt               GPIO used for interrupt (default 4)
+        sizex                   Touchscreen size x (default 4096)
+        sizey                   Touchscreen size y (default 4096)
+        invx                    Touchscreen inverted x axis
+        invy                    Touchscreen inverted y axis
+        swapxy                  Touchscreen swapped x y axis
+
+
+Name:   fe-pi-audio
+Info:   Configures the Fe-Pi Audio Sound Card
+Load:   dtoverlay=fe-pi-audio
+Params: <None>
+
+
+Name:   goodix
+Info:   Enables I2C connected Goodix gt9271 multiple touch controller using
+        GPIOs 4 and 17 (pins 7 and 11 on GPIO header) for interrupt and reset.
+Load:   dtoverlay=goodix,<param>=<val>
+Params: interrupt               GPIO used for interrupt (default 4)
+        reset                   GPIO used for reset (default 17)
+
+
+Name:   googlevoicehat-soundcard
+Info:   Configures the Google voiceHAT soundcard
+Load:   dtoverlay=googlevoicehat-soundcard
+Params: <None>
+
+
+Name:   gpio-ir
+Info:   Use GPIO pin as rc-core style infrared receiver input. The rc-core-
+        based gpio_ir_recv driver maps received keys directly to a
+        /dev/input/event* device, all decoding is done by the kernel - LIRC is
+        not required! The key mapping and other decoding parameters can be
+        configured by "ir-keytable" tool.
+Load:   dtoverlay=gpio-ir,<param>=<val>
+Params: gpio_pin                Input pin number. Default is 18.
+
+        gpio_pull               Desired pull-up/down state (off, down, up)
+                                Default is "down".
+
+        rc-map-name             Default rc keymap (can also be changed by
+                                ir-keytable), defaults to "rc-rc6-mce"
+
+
+Name:   gpio-ir-tx
+Info:   Use GPIO pin as bit-banged infrared transmitter output.
+        This is an alternative to "pwm-ir-tx". gpio-ir-tx doesn't require
+        a PWM so it can be used together with onboard analog audio.
+Load:   dtoverlay=gpio-ir-tx,<param>=<val>
+Params: gpio_pin                Output GPIO (default 18)
+
+        invert                  "1" = invert the output (make it active-low).
+                                Default is "0" (active-high).
+
+
+Name:   gpio-key
+Info:   This is a generic overlay for activating GPIO keypresses using
+        the gpio-keys library and this dtoverlay. Multiple keys can be
+        set up using multiple calls to the overlay for configuring
+        additional buttons or joysticks. You can see available keycodes
+        at https://github.com/torvalds/linux/blob/v4.12/include/uapi/
+        linux/input-event-codes.h#L64
+Load:   dtoverlay=gpio-key,<param>=<val>
+Params: gpio                    GPIO pin to trigger on (default 3)
+        active_low              When this is 1 (active low), a falling
+                                edge generates a key down event and a
+                                rising edge generates a key up event.
+                                When this is 0 (active high), this is
+                                reversed. The default is 1 (active low)
+        gpio_pull               Desired pull-up/down state (off, down, up)
+                                Default is "up". Note that the default pin
+                                (GPIO3) has an external pullup
+        label                   Set a label for the key
+        keycode                 Set the key code for the button
+
+
+Name:   gpio-no-irq
+Info:   Use this overlay to disable all GPIO interrupts, which can be useful
+        for user-space GPIO edge detection systems.
+Load:   dtoverlay=gpio-no-irq
+Params: <None>
+
+
+Name:   gpio-poweroff
+Info:   Drives a GPIO high or low on poweroff (including halt). Enabling this
+        overlay will prevent the ability to boot by driving GPIO3 low.
+Load:   dtoverlay=gpio-poweroff,<param>=<val>
+Params: gpiopin                 GPIO for signalling (default 26)
+
+        active_low              Set if the power control device requires a
+                                high->low transition to trigger a power-down.
+                                Note that this will require the support of a
+                                custom dt-blob.bin to prevent a power-down
+                                during the boot process, and that a reboot
+                                will also cause the pin to go low.
+        input                   Set if the gpio pin should be configured as
+                                an input.
+        export                  Set to export the configured pin to sysfs
+
+
+Name:   gpio-shutdown
+Info:   Initiates a shutdown when GPIO pin changes. The given GPIO pin
+        is configured as an input key that generates KEY_POWER events.
+        This event is handled by systemd-logind by initiating a
+        shutdown. Systemd versions older than 225 need an udev rule
+        enable listening to the input device:
+
+                ACTION!="REMOVE", SUBSYSTEM=="input", KERNEL=="event*", \
+                        SUBSYSTEMS=="platform", DRIVERS=="gpio-keys", \
+                        ATTRS{keys}=="116", TAG+="power-switch"
+
+        This overlay only handles shutdown. After shutdown, the system
+        can be powered up again by driving GPIO3 low. The default
+        configuration uses GPIO3 with a pullup, so if you connect a
+        button between GPIO3 and GND (pin 5 and 6 on the 40-pin header),
+        you get a shutdown and power-up button.
+Load:   dtoverlay=gpio-shutdown,<param>=<val>
+Params: gpio_pin                GPIO pin to trigger on (default 3)
+
+        active_low              When this is 1 (active low), a falling
+                                edge generates a key down event and a
+                                rising edge generates a key up event.
+                                When this is 0 (active high), this is
+                                reversed. The default is 1 (active low).
+
+        gpio_pull               Desired pull-up/down state (off, down, up)
+                                Default is "up".
+
+                                Note that the default pin (GPIO3) has an
+                                external pullup.
+
+
+Name:   hifiberry-amp
+Info:   Configures the HifiBerry Amp and Amp+ audio cards
+Load:   dtoverlay=hifiberry-amp
+Params: <None>
+
+
+Name:   hifiberry-dac
+Info:   Configures the HifiBerry DAC audio card
+Load:   dtoverlay=hifiberry-dac
+Params: <None>
+
+
+Name:   hifiberry-dacplus
+Info:   Configures the HifiBerry DAC+ audio card
+Load:   dtoverlay=hifiberry-dacplus,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=hifiberry-dacplus,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24dB_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+        slave                   Force DAC+ Pro into slave mode, using Pi as
+                                master for bit clock and frame clock.
+
+
+Name:   hifiberry-digi
+Info:   Configures the HifiBerry Digi and Digi+ audio card
+Load:   dtoverlay=hifiberry-digi
+Params: <None>
+
+
+Name:   hifiberry-digi-pro
+Info:   Configures the HifiBerry Digi+ Pro audio card
+Load:   dtoverlay=hifiberry-digi-pro
+Params: <None>
+
+
+Name:   hy28a
+Info:   HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
+        Default values match Texy's display shield
+Load:   dtoverlay=hy28a,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+
+        resetgpio               GPIO used to reset controller
+
+        ledgpio                 GPIO used to control backlight
+
+
+Name:   hy28b
+Info:   HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics
+        Default values match Texy's display shield
+Load:   dtoverlay=hy28b,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+
+        resetgpio               GPIO used to reset controller
+
+        ledgpio                 GPIO used to control backlight
+
+
+Name:   i2c-bcm2708
+Info:   Fall back to the i2c_bcm2708 driver for the i2c_arm bus.
+Load:   dtoverlay=i2c-bcm2708
+Params: <None>
+
+
+Name:   i2c-gpio
+Info:   Adds support for software i2c controller on gpio pins
+Load:   dtoverlay=i2c-gpio,<param>=<val>
+Params: i2c_gpio_sda            GPIO used for I2C data (default "23")
+
+        i2c_gpio_scl            GPIO used for I2C clock (default "24")
+
+        i2c_gpio_delay_us       Clock delay in microseconds
+                                (default "2" = ~100kHz)
+
+        bus                     Set to a unique, non-zero value if wanting
+                                multiple i2c-gpio busses. If set, will be used
+                                as the preferred bus number (/dev/i2c-<n>). If
+                                not set, the default value is 0, but the bus
+                                number will be dynamically assigned - probably
+                                3.
+
+
+Name:   i2c-mux
+Info:   Adds support for a number of I2C bus multiplexers on i2c_arm
+Load:   dtoverlay=i2c-mux,<param>=<val>
+Params: pca9542                 Select the NXP PCA9542 device
+
+        pca9545                 Select the NXP PCA9545 device
+
+        pca9548                 Select the NXP PCA9548 device
+
+        addr                    Change I2C address of the device (default 0x70)
+
+
+[ The i2c-mux-pca9548a overlay has been deleted. See i2c-mux. ]
+
+
+Name:   i2c-pwm-pca9685a
+Info:   Adds support for an NXP PCA9685A I2C PWM controller on i2c_arm
+Load:   dtoverlay=i2c-pwm-pca9685a,<param>=<val>
+Params: addr                    I2C address of PCA9685A (default 0x40)
+
+
+Name:   i2c-rtc
+Info:   Adds support for a number of I2C Real Time Clock devices
+Load:   dtoverlay=i2c-rtc,<param>=<val>
+Params: abx80x                  Select one of the ABx80x family:
+                                  AB0801, AB0803, AB0804, AB0805,
+                                  AB1801, AB1803, AB1804, AB1805
+
+        ds1307                  Select the DS1307 device
+
+        ds1339                  Select the DS1339 device
+
+        ds3231                  Select the DS3231 device
+
+        m41t62                  Select the M41T62 device
+
+        mcp7940x                Select the MCP7940x device
+
+        mcp7941x                Select the MCP7941x device
+
+        pcf2127                 Select the PCF2127 device
+
+        pcf8523                 Select the PCF8523 device
+
+        pcf8563                 Select the PCF8563 device
+
+        trickle-diode-type      Diode type for trickle charge - "standard" or
+                                "schottky" (ABx80x only)
+
+        trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
+                                ABx80x)
+
+        wakeup-source           Specify that the RTC can be used as a wakeup
+                                source
+
+
+Name:   i2c-rtc-gpio
+Info:   Adds support for a number of I2C Real Time Clock devices
+        using the software i2c controller
+Load:   dtoverlay=i2c-rtc-gpio,<param>=<val>
+Params: abx80x                  Select one of the ABx80x family:
+                                  AB0801, AB0803, AB0804, AB0805,
+                                  AB1801, AB1803, AB1804, AB1805
+
+        ds1307                  Select the DS1307 device
+
+        ds1339                  Select the DS1339 device
+
+        ds3231                  Select the DS3231 device
+
+        mcp7940x                Select the MCP7940x device
+
+        mcp7941x                Select the MCP7941x device
+
+        pcf2127                 Select the PCF2127 device
+
+        pcf8523                 Select the PCF8523 device
+
+        pcf8563                 Select the PCF8563 device
+
+        trickle-diode-type      Diode type for trickle charge - "standard" or
+                                "schottky" (ABx80x only)
+
+        trickle-resistor-ohms   Resistor value for trickle charge (DS1339,
+                                ABx80x)
+
+        wakeup-source           Specify that the RTC can be used as a wakeup
+                                source
+
+        i2c_gpio_sda            GPIO used for I2C data (default "23")
+
+        i2c_gpio_scl            GPIO used for I2C clock (default "24")
+
+        i2c_gpio_delay_us       Clock delay in microseconds
+                                (default "2" = ~100kHz)
+
+
+Name:   i2c-sensor
+Info:   Adds support for a number of I2C barometric pressure and temperature
+        sensors on i2c_arm
+Load:   dtoverlay=i2c-sensor,<param>=<val>
+Params: addr                    Set the address for the BME280, BMP280, DS1621,
+                                HDC100X, LM75, SHT3x or TMP102
+
+        bme280                  Select the Bosch Sensortronic BME280
+                                Valid addresses 0x76-0x77, default 0x76
+
+        bmp085                  Select the Bosch Sensortronic BMP085
+
+        bmp180                  Select the Bosch Sensortronic BMP180
+
+        bmp280                  Select the Bosch Sensortronic BMP280
+                                Valid addresses 0x76-0x77, default 0x76
+
+        ds1621                  Select the Dallas Semiconductors DS1621 temp
+                                sensor. Valid addresses 0x48-0x4f, default 0x48
+
+        hdc100x                 Select the Texas Instruments HDC100x temp sensor
+                                Valid addresses 0x40-0x43, default 0x40
+
+        htu21                   Select the HTU21 temperature and humidity sensor
+
+        lm75                    Select the Maxim LM75 temperature sensor
+                                Valid addresses 0x48-0x4f, default 0x4f
+
+        lm75addr                Deprecated - use addr parameter instead
+
+        sht3x                   Select the Sensiron SHT3x temperature and
+                                humidity sensor. Valid addresses 0x44-0x45,
+                                default 0x44
+
+        si7020                  Select the Silicon Labs Si7013/20/21 humidity/
+                                temperature sensor
+
+        tmp102                  Select the Texas Instruments TMP102 temp sensor
+                                Valid addresses 0x48-0x4b, default 0x48
+
+        tsl4531                 Select the AMS TSL4531 digital ambient light
+                                sensor
+
+        veml6070                Select the Vishay VEML6070 ultraviolet light
+                                sensor
+
+
+Name:   i2c0-bcm2708
+Info:   Change i2c0 pin usage. Not all pin combinations are usable on all
+        platforms - platforms other then Compute Modules can only use this
+        to disable transaction combining.
+Load:   dtoverlay=i2c0-bcm2708,<param>=<val>
+Params: sda0_pin                GPIO pin for SDA0 (deprecated - use pins_*)
+        scl0_pin                GPIO pin for SCL0 (deprecated - use pins_*)
+        pins_0_1                Use pins 0 and 1 (default)
+        pins_28_29              Use pins 28 and 29
+        pins_44_45              Use pins 44 and 45
+        pins_46_47              Use pins 46 and 47
+        combine                 Allow transactions to be combined (default
+                                "yes")
+
+
+Name:   i2c1-bcm2708
+Info:   Change i2c1 pin usage. Not all pin combinations are usable on all
+        platforms - platforms other then Compute Modules can only use this
+        to disable transaction combining.
+Info:   Enable the i2c_bcm2708 driver for the i2c1 bus
+Load:   dtoverlay=i2c1-bcm2708,<param>=<val>
+Params: sda1_pin                GPIO pin for SDA1 (2 or 44 - default 2)
+        scl1_pin                GPIO pin for SCL1 (3 or 45 - default 3)
+        pin_func                Alternative pin function (4 (alt0), 6 (alt2) -
+                                default 4)
+        combine                 Allow transactions to be combined (default
+                                "yes")
+
+
+Name:   i2s-gpio28-31
+Info:   move I2S function block to GPIO 28 to 31
+Load:   dtoverlay=i2s-gpio28-31
+Params: <None>
+
+
+Name:   iqaudio-dac
+Info:   Configures the IQaudio DAC audio card
+Load:   dtoverlay=iqaudio-dac,<param>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=iqaudio-dac,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
+Name:   iqaudio-dacplus
+Info:   Configures the IQaudio DAC+ audio card
+Load:   dtoverlay=iqaudio-dacplus,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=iqaudio-dacplus,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24db_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+        auto_mute_amp           If specified, unmute/mute the IQaudIO amp when
+                                starting/stopping audio playback.
+        unmute_amp              If specified, unmute the IQaudIO amp once when
+                                the DAC driver module loads.
+
+
+Name:   iqaudio-digi-wm8804-audio
+Info:   Configures the IQAudIO Digi WM8804 audio card
+Load:   dtoverlay=iqaudio-digi-wm8804-audio,<param>=<val>
+Params: card_name               Override the default, "IQAudIODigi", card name.
+        dai_name                Override the default, "IQAudIO Digi", dai name.
+        dai_stream_name         Override the default, "IQAudIO Digi HiFi",
+                                dai stream name.
+
+
+Name:   jedec-spi-nor
+Info:   Adds support for JEDEC-compliant SPI NOR flash devices.  (Note: The
+        "jedec,spi-nor" kernel driver was formerly known as "m25p80".)
+Load:   dtoverlay=jedec-spi-nor,<param>=<val>
+Params: flash-spi<n>-<m>        Enables flash device on SPI<n>, CS#<m>.
+        flash-fastr-spi<n>-<m>  Enables flash device with fast read capability
+                                on SPI<n>, CS#<m>.
+
+
+Name:   justboom-dac
+Info:   Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
+        cards
+Load:   dtoverlay=justboom-dac,<param>=<val>
+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
+                                Digital volume control. Enable with
+                                "dtoverlay=justboom-dac,24db_digital_gain"
+                                (The default behaviour is that the Digital
+                                volume control is limited to a maximum of
+                                0dB. ie. it can attenuate but not provide
+                                gain. For most users, this will be desired
+                                as it will prevent clipping. By appending
+                                the 24dB_digital_gain parameter, the Digital
+                                volume control will allow up to 24dB of
+                                gain. If this parameter is enabled, it is the
+                                responsibility of the user to ensure that
+                                the Digital volume control is set to a value
+                                that does not result in clipping/distortion!)
+
+
+Name:   justboom-digi
+Info:   Configures the JustBoom Digi HAT and Digi Zero audio cards
+Load:   dtoverlay=justboom-digi
+Params: <None>
+
+
+Name:   lirc-rpi
+Info:   Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
+        Consult the module documentation for more details.
+Load:   dtoverlay=lirc-rpi,<param>=<val>
+Params: gpio_out_pin            GPIO for output (default "17")
+
+        gpio_in_pin             GPIO for input (default "18")
+
+        gpio_in_pull            Pull up/down/off on the input pin
+                                (default "down")
+
+        sense                   Override the IR receive auto-detection logic:
+                                 "0" = force active-high
+                                 "1" = force active-low
+                                 "-1" = use auto-detection
+                                (default "-1")
+
+        softcarrier             Turn the software carrier "on" or "off"
+                                (default "on")
+
+        invert                  "on" = invert the output pin (default "off")
+
+        debug                   "on" = enable additional debug messages
+                                (default "off")
+
+
+Name:   ltc294x
+Info:   Adds support for the ltc294x family of battery gauges
+Load:   dtoverlay=ltc294x,<param>=<val>
+Params: ltc2941                 Select the ltc2941 device
+
+        ltc2942                 Select the ltc2942 device
+
+        ltc2943                 Select the ltc2943 device
+
+        ltc2944                 Select the ltc2944 device
+
+        resistor-sense          The sense resistor value in milli-ohms.
+                                Can be a 32-bit negative value when the battery
+                                has been connected to the wrong end of the
+                                resistor.
+
+        prescaler-exponent      Range and accuracy of the gauge. The value is
+                                programmed into the chip only if it differs
+                                from the current setting.
+                                For LTC2941 only:
+                                - Default value is 128
+                                - the exponent is in the range 0-7 (default 7)
+                                See the datasheet for more information.
+
+
+Name:   mbed-dac
+Info:   Configures the mbed AudioCODEC (TLV320AIC23B)
+Load:   dtoverlay=mbed-dac
+Params: <None>
+
+
+Name:   mcp23017
+Info:   Configures the MCP23017 I2C GPIO expander
+Load:   dtoverlay=mcp23017,<param>=<val>
+Params: gpiopin                 Gpio pin connected to the INTA output of the
+                                MCP23017 (default: 4)
+
+        addr                    I2C address of the MCP23017 (default: 0x20)
+
+
+Name:   mcp23s17
+Info:   Configures the MCP23S08/17 SPI GPIO expanders.
+        If devices are present on SPI1 or SPI2, those interfaces must be enabled
+        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+        If interrupts are enabled for a device on a given CS# on a SPI bus, that
+        device must be the only one present on that SPI bus/CS#.
+Load:   dtoverlay=mcp23s17,<param>=<val>
+Params: s08-spi<n>-<m>-present  4-bit integer, bitmap indicating MCP23S08
+                                devices present on SPI<n>, CS#<m>
+
+        s17-spi<n>-<m>-present  8-bit integer, bitmap indicating MCP23S17
+                                devices present on SPI<n>, CS#<m>
+
+        s08-spi<n>-<m>-int-gpio integer, enables interrupts on a single
+                                MCP23S08 device on SPI<n>, CS#<m>, specifies
+                                the GPIO pin to which INT output of MCP23S08
+                                is connected.
+
+        s17-spi<n>-<m>-int-gpio integer, enables mirrored interrupts on a
+                                single MCP23S17 device on SPI<n>, CS#<m>,
+                                specifies the GPIO pin to which either INTA
+                                or INTB output of MCP23S17 is connected.
+
+
+Name:   mcp2515-can0
+Info:   Configures the MCP2515 CAN controller on spi0.0
+Load:   dtoverlay=mcp2515-can0,<param>=<val>
+Params: oscillator              Clock frequency for the CAN controller (Hz)
+
+        spimaxfrequency         Maximum SPI frequence (Hz)
+
+        interrupt               GPIO for interrupt signal
+
+
+Name:   mcp2515-can1
+Info:   Configures the MCP2515 CAN controller on spi0.1
+Load:   dtoverlay=mcp2515-can1,<param>=<val>
+Params: oscillator              Clock frequency for the CAN controller (Hz)
+
+        spimaxfrequency         Maximum SPI frequence (Hz)
+
+        interrupt               GPIO for interrupt signal
+
+
+Name:   mcp3008
+Info:   Configures MCP3008 A/D converters
+        For devices on spi1 or spi2, the interfaces should be enabled
+        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+Load:   dtoverlay=mcp3008,<param>[=<val>]
+Params: spi<n>-<m>-present      boolean, configure device at spi<n>, cs<m>
+        spi<n>-<m>-speed        integer, set the spi bus speed for this device
+
+
+Name:   mcp3202
+Info:   Configures MCP3202 A/D converters
+        For devices on spi1 or spi2, the interfaces should be enabled
+        with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+Load:   dtoverlay=mcp3202,<param>[=<val>]
+Params: spi<n>-<m>-present      boolean, configure device at spi<n>, cs<m>
+        spi<n>-<m>-speed        integer, set the spi bus speed for this device
+
+
+Name:   media-center
+Info:   Media Center HAT - 2.83" Touch Display + extras by Pi Supply
+Load:   dtoverlay=media-center,<param>=<val>
+Params: speed                   Display SPI bus speed
+        rotate                  Display rotation {0,90,180,270}
+        fps                     Delay between frame updates
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+        swapxy                  Swap x and y axis
+        backlight               Change backlight GPIO pin {e.g. 12, 18}
+        gpio_out_pin            GPIO for output (default "17")
+        gpio_in_pin             GPIO for input (default "18")
+        gpio_in_pull            Pull up/down/off on the input pin
+                                (default "down")
+        sense                   Override the IR receive auto-detection logic:
+                                 "0" = force active-high
+                                 "1" = force active-low
+                                 "-1" = use auto-detection
+                                (default "-1")
+        softcarrier             Turn the software carrier "on" or "off"
+                                (default "on")
+        invert                  "on" = invert the output pin (default "off")
+        debug                   "on" = enable additional debug messages
+                                (default "off")
+
+
+Name:   midi-uart0
+Info:   Configures UART0 (ttyAMA0) so that a requested 38.4kbaud actually gets
+        31.25kbaud, the frequency required for MIDI
+Load:   dtoverlay=midi-uart0
+Params: <None>
+
+
+Name:   midi-uart1
+Info:   Configures UART1 (ttyS0) so that a requested 38.4kbaud actually gets
+        31.25kbaud, the frequency required for MIDI
+Load:   dtoverlay=midi-uart1
+Params: <None>
+
+
+Name:   mmc
+Info:   Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
+Load:   dtoverlay=mmc,<param>=<val>
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
+
+
+Name:   mpu6050
+Info:   Overlay for i2c connected mpu6050 imu
+Load:   dtoverlay=mpu6050,<param>=<val>
+Params: interrupt               GPIO pin for interrupt (default 4)
+
+
+Name:   mz61581
+Info:   MZ61581 display by Tontec
+Load:   dtoverlay=mz61581,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        txbuflen                Transmit buffer length (default 32768)
+
+        debug                   Debug output level {0-7}
+
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+
+
+Name:   papirus
+Info:   PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
+Load:   dtoverlay=papirus,<param>=<val>
+Params: panel                   Display panel (required):
+                                1.44": e1144cs021
+                                2.0":  e2200cs021
+                                2.7":  e2271cs021
+
+        speed                   Display SPI bus speed
+
+
+[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8523-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name:   pi3-act-led
+Info:   Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
+        from the VPU. There is a special driver for this with a separate DT
+        node, which has the unfortunate consequence of breaking the
+        act_led_gpio and act_led_activelow dtparams.
+        This overlay changes the GPIO controller back to the standard one and
+        restores the dtparams.
+Load:   dtoverlay=pi3-act-led,<param>=<val>
+Params: activelow               Set to "on" to invert the sense of the LED
+                                (default "off")
+
+        gpio                    Set which GPIO to use for the activity LED
+                                (in case you want to connect it to an external
+                                device)
+                                REQUIRED
+
+
+Name:   pi3-disable-bt
+Info:   Disable Pi3 Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15
+        N.B. To disable the systemd service that initialises the modem so it
+        doesn't use the UART, use 'sudo systemctl disable hciuart'.
+Load:   dtoverlay=pi3-disable-bt
+Params: <None>
+
+
+Name:   pi3-disable-wifi
+Info:   Disable Pi3 onboard WiFi
+Load:   dtoverlay=pi3-disable-wifi
+Params: <None>
+
+
+Name:   pi3-miniuart-bt
+Info:   Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore
+        UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum
+        usable baudrate.
+        N.B. It is also necessary to edit /lib/systemd/system/hciuart.service
+        and replace ttyAMA0 with ttyS0, unless you have a system with udev rules
+        that create /dev/serial0 and /dev/serial1, in which case use
+        /dev/serial1 instead because it will always be correct. Furthermore,
+        you must also set core_freq=250 in config.txt or the miniuart will not
+        work.
+Load:   dtoverlay=pi3-miniuart-bt
+Params: <None>
+
+
+Name:   pibell
+Info:   Configures the pibell audio card.
+Load:   dtoverlay=pibell,<param>=<val>
+Params: alsaname                Set the name as it appears in ALSA (default
+                                "PiBell")
+
+
+Name:   piscreen
+Info:   PiScreen display by OzzMaker.com
+Load:   dtoverlay=piscreen,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+
+
+Name:   piscreen2r
+Info:   PiScreen 2 with resistive TP display by OzzMaker.com
+Load:   dtoverlay=piscreen2r,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+
+
+Name:   pisound
+Info:   Configures the Blokas Labs pisound card
+Load:   dtoverlay=pisound
+Params: <None>
+
+
+Name:   pitft22
+Info:   Adafruit PiTFT 2.2" screen
+Load:   dtoverlay=pitft22,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+
+Name:   pitft28-capacitive
+Info:   Adafruit PiTFT 2.8" capacitive touch screen
+Load:   dtoverlay=pitft28-capacitive,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        touch-sizex             Touchscreen size x (default 240)
+
+        touch-sizey             Touchscreen size y (default 320)
+
+        touch-invx              Touchscreen inverted x axis
+
+        touch-invy              Touchscreen inverted y axis
+
+        touch-swapxy            Touchscreen swapped x y axis
+
+
+Name:   pitft28-resistive
+Info:   Adafruit PiTFT 2.8" resistive touch screen
+Load:   dtoverlay=pitft28-resistive,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+
+Name:   pitft35-resistive
+Info:   Adafruit PiTFT 3.5" resistive touch screen
+Load:   dtoverlay=pitft35-resistive,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+
+Name:   pps-gpio
+Info:   Configures the pps-gpio (pulse-per-second time signal via GPIO).
+Load:   dtoverlay=pps-gpio,<param>=<val>
+Params: gpiopin                 Input GPIO (default "18")
+        assert_falling_edge     When present, assert is indicated by a falling
+                                edge, rather than by a rising edge (default
+                                off)
+        capture_clear           Generate clear events on the trailing edge
+                                (default off)
+
+
+Name:   pwm
+Info:   Configures a single PWM channel
+        Legal pin,function combinations for each channel:
+          PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
+          PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
+        N.B.:
+          1) Pin 18 is the only one available on all platforms, and
+             it is the one used by the I2S audio interface.
+             Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
+          2) The onboard analogue audio output uses both PWM channels.
+          3) So be careful mixing audio and PWM.
+          4) Currently the clock must have been enabled and configured
+             by other means.
+Load:   dtoverlay=pwm,<param>=<val>
+Params: pin                     Output pin (default 18) - see table
+        func                    Pin function (default 2 = Alt5) - see above
+        clock                   PWM clock frequency (informational)
+
+
+Name:   pwm-2chan
+Info:   Configures both PWM channels
+        Legal pin,function combinations for each channel:
+          PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
+          PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
+        N.B.:
+          1) Pin 18 is the only one available on all platforms, and
+             it is the one used by the I2S audio interface.
+             Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
+          2) The onboard analogue audio output uses both PWM channels.
+          3) So be careful mixing audio and PWM.
+          4) Currently the clock must have been enabled and configured
+             by other means.
+Load:   dtoverlay=pwm-2chan,<param>=<val>
+Params: pin                     Output pin (default 18) - see table
+        pin2                    Output pin for other channel (default 19)
+        func                    Pin function (default 2 = Alt5) - see above
+        func2                   Function for pin2 (default 2 = Alt5)
+        clock                   PWM clock frequency (informational)
+
+
+Name:   pwm-ir-tx
+Info:   Use GPIO pin as pwm-assisted infrared transmitter output.
+        This is an alternative to "gpio-ir-tx". pwm-ir-tx makes use
+        of PWM0 to reduce the CPU load during transmission compared to
+        gpio-ir-tx which uses bit-banging.
+        Legal pin,function combinations are:
+          12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1)
+Load:   dtoverlay=pwm-ir-tx,<param>=<val>
+Params: gpio_pin                Output GPIO (default 18)
+
+        func                    Pin function (default 2 = Alt5)
+
+
+Name:   qca7000
+Info:   I2SE's Evaluation Board for PLC Stamp micro
+Load:   dtoverlay=qca7000,<param>=<val>
+Params: int_pin                 GPIO pin for interrupt signal (default 23)
+
+        speed                   SPI bus speed (default 12 MHz)
+
+
+Name:   rotary-encoder
+Info:   Overlay for GPIO connected rotary encoder.
+Load:   dtoverlay=rotary-encoder,<param>=<val>
+Params: pin_a                   GPIO connected to rotary encoder channel A
+                                (default 4).
+        pin_b                   GPIO connected to rotary encoder channel B
+                                (default 17).
+        relative_axis           register a relative axis rather than an
+                                absolute one. Relative axis will only
+                                generate +1/-1 events on the input device,
+                                hence no steps need to be passed.
+        linux_axis              the input subsystem axis to map to this
+                                rotary encoder. Defaults to 0 (ABS_X / REL_X)
+        rollover                Automatic rollover when the rotary value
+                                becomes greater than the specified steps or
+                                smaller than 0. For absolute axis only.
+        steps-per-period        Number of steps (stable states) per period.
+                                The values have the following meaning:
+                                1: Full-period mode (default)
+                                2: Half-period mode
+                                4: Quarter-period mode
+        steps                   Number of steps in a full turnaround of the
+                                encoder. Only relevant for absolute axis.
+                                Defaults to 24 which is a typical value for
+                                such devices.
+        wakeup                  Boolean, rotary encoder can wake up the
+                                system.
+        encoding                String, the method used to encode steps.
+                                Supported are "gray" (the default and more
+                                common) and "binary".
+
+
+Name:   rpi-backlight
+Info:   Raspberry Pi official display backlight driver
+Load:   dtoverlay=rpi-backlight
+Params: <None>
+
+
+Name:   rpi-cirrus-wm5102
+Info:   Configures the Cirrus Logic Audio Card
+Load:   dtoverlay=rpi-cirrus-wm5102
+Params: <None>
+
+
+Name:   rpi-dac
+Info:   Configures the RPi DAC audio card
+Load:   dtoverlay=rpi-dac
+Params: <None>
+
+
+Name:   rpi-display
+Info:   RPi-Display - 2.8" Touch Display by Watterott
+Load:   dtoverlay=rpi-display,<param>=<val>
+Params: speed                   Display SPI bus speed
+        rotate                  Display rotation {0,90,180,270}
+        fps                     Delay between frame updates
+        debug                   Debug output level {0-7}
+        xohms                   Touchpanel sensitivity (X-plate resistance)
+        swapxy                  Swap x and y axis
+        backlight               Change backlight GPIO pin {e.g. 12, 18}
+
+
+Name:   rpi-ft5406
+Info:   Official Raspberry Pi display touchscreen
+Load:   dtoverlay=rpi-ft5406,<param>=<val>
+Params: touchscreen-size-x      Touchscreen X resolution (default 800)
+        touchscreen-size-y      Touchscreen Y resolution (default 600);
+        touchscreen-inverted-x  Invert touchscreen X coordinates (default 0);
+        touchscreen-inverted-y  Invert touchscreen Y coordinates (default 0);
+        touchscreen-swapped-x-y Swap X and Y cordinates (default 0);
+
+
+Name:   rpi-proto
+Info:   Configures the RPi Proto audio card
+Load:   dtoverlay=rpi-proto
+Params: <None>
+
+
+Name:   rpi-sense
+Info:   Raspberry Pi Sense HAT
+Load:   dtoverlay=rpi-sense
+Params: <None>
+
+
+Name:   rpi-tv
+Info:   Raspberry Pi TV HAT
+Load:   dtoverlay=rpi-tv
+Params: <None>
+
+
+Name:   rra-digidac1-wm8741-audio
+Info:   Configures the Red Rocks Audio DigiDAC1 soundcard
+Load:   dtoverlay=rra-digidac1-wm8741-audio
+Params: <None>
+
+
+Name:   sc16is750-i2c
+Info:   Overlay for the NXP SC16IS750 UART with I2C Interface
+        Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
+        select another address, please refer to table 10 in reference manual.
+Load:   dtoverlay=sc16is750-i2c,<param>=<val>
+Params: int_pin                 GPIO used for IRQ (default 24)
+        addr                    Address (default 0x48)
+
+
+Name:   sc16is752-i2c
+Info:   Overlay for the NXP SC16IS752 dual UART with I2C Interface
+        Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
+        select another address, please refer to table 10 in reference manual.
+Load:   dtoverlay=sc16is752-i2c,<param>=<val>
+Params: int_pin                 GPIO used for IRQ (default 24)
+        addr                    Address (default 0x48)
+        xtal                    On-board crystal frequency (default 14745600)
+
+
+Name:   sc16is752-spi1
+Info:   Overlay for the NXP SC16IS752 Dual UART with SPI Interface
+        Enables the chip on SPI1.
+        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
+              A+, B+, Zero and PI2 B; as well as the Compute Module.
+
+Load:   dtoverlay=sc16is752-spi1,<param>=<val>
+Params: int_pin                 GPIO used for IRQ (default 24)
+
+
+Name:   sdhost
+Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock.
+        N.B. This overlay is designed for situations where the mmc driver is
+        the default, so it disables the other (mmc) interface - this will kill
+        WiFi on a Pi3. If this isn't what you want, either use the sdtweak
+        overlay or the new sd_* dtparams of the base DTBs.
+Load:   dtoverlay=sdhost,<param>=<val>
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
+
+        force_pio               Disable DMA support (default off)
+
+        pio_limit               Number of blocks above which to use DMA
+                                (default 1)
+
+        debug                   Enable debug output (default off)
+
+
+Name:   sdio
+Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
+        and enables SDIO via GPIOs 22-27.
+Load:   dtoverlay=sdio,<param>=<val>
+Params: sdio_overclock          SDIO Clock (in MHz) to use when the MMC
+                                framework requests 50MHz
+
+        poll_once               Disable SDIO-device polling every second
+                                (default on: polling once at boot-time)
+
+        bus_width               Set the SDIO host bus width (default 4 bits)
+
+
+Name:   sdio-1bit
+Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
+        and enables 1-bit SDIO via GPIOs 22-25.
+Load:   dtoverlay=sdio-1bit,<param>=<val>
+Params: sdio_overclock          SDIO Clock (in MHz) to use when the MMC
+                                framework requests 50MHz
+
+        poll_once               Disable SDIO-device polling every second
+                                (default on: polling once at boot-time)
+
+
+Name:   sdtweak
+Info:   Tunes the bcm2835-sdhost SD/MMC driver
+        N.B. This functionality is now available via the sd_* dtparams in the
+        base DTB.
+Load:   dtoverlay=sdtweak,<param>=<val>
+Params: overclock_50            Clock (in MHz) to use when the MMC framework
+                                requests 50MHz
+
+        force_pio               Disable DMA support (default off)
+
+        pio_limit               Number of blocks above which to use DMA
+                                (default 1)
+
+        debug                   Enable debug output (default off)
+
+        poll_once               Looks for a card once after booting. Useful
+                                for network booting scenarios to avoid the
+                                overhead of continuous polling. N.B. Using
+                                this option restricts the system to using a
+                                single card per boot (or none at all).
+                                (default off)
+
+        enable                  Set to off to completely disable the interface
+                                (default on)
+
+
+Name:   smi
+Info:   Enables the Secondary Memory Interface peripheral. Uses GPIOs 2-25!
+Load:   dtoverlay=smi
+Params: <None>
+
+
+Name:   smi-dev
+Info:   Enables the userspace interface for the SMI driver
+Load:   dtoverlay=smi-dev
+Params: <None>
+
+
+Name:   smi-nand
+Info:   Enables access to NAND flash via the SMI interface
+Load:   dtoverlay=smi-nand
+Params: <None>
+
+
+Name:   spi-gpio35-39
+Info:   Move SPI function block to GPIO 35 to 39
+Load:   dtoverlay=spi-gpio35-39
+Params: <None>
+
+
+Name:   spi-rtc
+Info:   Adds support for a number of SPI Real Time Clock devices
+Load:   dtoverlay=spi-rtc,<param>=<val>
+Params: pcf2123                 Select the PCF2123 device
+
+
+Name:   spi0-cs
+Info:   Allows the (software) CS pins for SPI0 to be changed
+Load:   dtoverlay=spi0-cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 8)
+        cs1_pin                 GPIO pin for CS1 (default 7)
+
+
+Name:   spi0-hw-cs
+Info:   Re-enables hardware CS/CE (chip selects) for SPI0
+Load:   dtoverlay=spi0-hw-cs
+Params: <None>
+
+
+Name:   spi1-1cs
+Info:   Enables spi1 with a single chip select (CS) line and associated spidev
+        dev node. The gpio pin number for the CS line and spidev device node
+        creation are configurable.
+        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
+              A+, B+, Zero and PI2 B; as well as the Compute Module.
+Load:   dtoverlay=spi1-1cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.0 (default
+                                is 'okay' or enabled).
+
+
+Name:   spi1-2cs
+Info:   Enables spi1 with two chip select (CS) lines and associated spidev
+        dev nodes. The gpio pin numbers for the CS lines and spidev device node
+        creation are configurable.
+        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
+              A+, B+, Zero and PI2 B; as well as the Compute Module.
+Load:   dtoverlay=spi1-2cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
+        cs1_pin                 GPIO pin for CS1 (default 17 - BCM SPI1_CE1).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.0 (default
+                                is 'okay' or enabled).
+        cs1_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.1 (default
+                                is 'okay' or enabled).
+
+
+Name:   spi1-3cs
+Info:   Enables spi1 with three chip select (CS) lines and associated spidev
+        dev nodes. The gpio pin numbers for the CS lines and spidev device node
+        creation are configurable.
+        N.B.: spi1 is only accessible on devices with a 40pin header, eg:
+              A+, B+, Zero and PI2 B; as well as the Compute Module.
+Load:   dtoverlay=spi1-3cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 18 - BCM SPI1_CE0).
+        cs1_pin                 GPIO pin for CS1 (default 17 - BCM SPI1_CE1).
+        cs2_pin                 GPIO pin for CS2 (default 16 - BCM SPI1_CE2).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.0 (default
+                                is 'okay' or enabled).
+        cs1_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.1 (default
+                                is 'okay' or enabled).
+        cs2_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev1.2 (default
+                                is 'okay' or enabled).
+
+
+Name:   spi2-1cs
+Info:   Enables spi2 with a single chip select (CS) line and associated spidev
+        dev node. The gpio pin number for the CS line and spidev device node
+        creation are configurable.
+        N.B.: spi2 is only accessible with the Compute Module.
+Load:   dtoverlay=spi2-1cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.0 (default
+                                is 'okay' or enabled).
+
+
+Name:   spi2-2cs
+Info:   Enables spi2 with two chip select (CS) lines and associated spidev
+        dev nodes. The gpio pin numbers for the CS lines and spidev device node
+        creation are configurable.
+        N.B.: spi2 is only accessible with the Compute Module.
+Load:   dtoverlay=spi2-2cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
+        cs1_pin                 GPIO pin for CS1 (default 44 - BCM SPI2_CE1).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.0 (default
+                                is 'okay' or enabled).
+        cs1_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.1 (default
+                                is 'okay' or enabled).
+
+
+Name:   spi2-3cs
+Info:   Enables spi2 with three chip select (CS) lines and associated spidev
+        dev nodes. The gpio pin numbers for the CS lines and spidev device node
+        creation are configurable.
+        N.B.: spi2 is only accessible with the Compute Module.
+Load:   dtoverlay=spi2-3cs,<param>=<val>
+Params: cs0_pin                 GPIO pin for CS0 (default 43 - BCM SPI2_CE0).
+        cs1_pin                 GPIO pin for CS1 (default 44 - BCM SPI2_CE1).
+        cs2_pin                 GPIO pin for CS2 (default 45 - BCM SPI2_CE2).
+        cs0_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.0 (default
+                                is 'okay' or enabled).
+        cs1_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.1 (default
+                                is 'okay' or enabled).
+        cs2_spidev              Set to 'disabled' to stop the creation of a
+                                userspace device node /dev/spidev2.2 (default
+                                is 'okay' or enabled).
+
+
+Name:   superaudioboard
+Info:   Configures the SuperAudioBoard sound card
+Load:   dtoverlay=superaudioboard,<param>=<val>
+Params: gpiopin                 GPIO pin for codec reset
+
+
+Name:   sx150x
+Info:   Configures the Semtech SX150X I2C GPIO expanders.
+Load:   dtoverlay=sx150x,<param>=<val>
+Params: sx150<x>-<n>-<m>        Enables SX150X device on I2C#<n> with slave
+                                address <m>. <x> may be 1-9. <n> may be 0 or 1.
+                                Permissible values of <m> (which is denoted in
+                                hex) depend on the device variant. For SX1501,
+                                SX1502, SX1504 and SX1505, <m> may be 20 or 21.
+                                For SX1503 and SX1506, <m> may be 20. For
+                                SX1507 and SX1509, <m> may be 3E, 3F, 70 or 71.
+                                For SX1508, <m> may be 20, 21, 22 or 23.
+
+        sx150<x>-<n>-<m>-int-gpio
+                                Integer, enables interrupts on SX150X device on
+                                I2C#<n> with slave address <m>, specifies
+                                the GPIO pin to which NINT output of SX150X is
+                                connected.
+
+
+Name:   tinylcd35
+Info:   3.5" Color TFT Display by www.tinylcd.com
+        Options: Touch, RTC, keypad
+Load:   dtoverlay=tinylcd35,<param>=<val>
+Params: speed                   Display SPI bus speed
+
+        rotate                  Display rotation {0,90,180,270}
+
+        fps                     Delay between frame updates
+
+        debug                   Debug output level {0-7}
+
+        touch                   Enable touch panel
+
+        touchgpio               Touch controller IRQ GPIO
+
+        xohms                   Touchpanel: Resistance of X-plate in ohms
+
+        rtc-pcf                 PCF8563 Real Time Clock
+
+        rtc-ds                  DS1307 Real Time Clock
+
+        keypad                  Enable keypad
+
+        Examples:
+            Display with touchpanel, PCF8563 RTC and keypad:
+                dtoverlay=tinylcd35,touch,rtc-pcf,keypad
+            Old touch display:
+                dtoverlay=tinylcd35,touch,touchgpio=3
+
+
+Name:   uart0
+Info:   Change the pin usage of uart0
+Load:   dtoverlay=uart0,<param>=<val>
+Params: txd0_pin                GPIO pin for TXD0 (14, 32 or 36 - default 14)
+
+        rxd0_pin                GPIO pin for RXD0 (15, 33 or 37 - default 15)
+
+        pin_func                Alternative pin function - 4(Alt0) for 14&15,
+                                7(Alt3) for 32&33, 6(Alt2) for 36&37
+
+
+Name:   uart1
+Info:   Change the pin usage of uart1
+Load:   dtoverlay=uart1,<param>=<val>
+Params: txd1_pin                GPIO pin for TXD1 (14, 32 or 40 - default 14)
+
+        rxd1_pin                GPIO pin for RXD1 (15, 33 or 41 - default 15)
+
+
+Name:   upstream
+Info:   Allow usage of downstream .dtb with upstream kernel. Comprises
+        vc4-kms-v3d, dwc2 and upstream-aux-interrupt overlays.
+Load:   dtoverlay=upstream
+Params: <None>
+
+
+Name:   upstream-aux-interrupt
+Info:   Allow usage of downstream .dtb with upstream kernel by binding AUX
+        devices directly to the shared AUX interrupt line. One of the parts
+        of the 'upstream' overlay
+Load:   dtoverlay=upstream-aux-interrupt
+Params: <None>
+
+
+Name:   vc4-fkms-v3d
+Info:   Enable Eric Anholt's DRM VC4 V3D driver on top of the dispmanx
+        display stack.
+Load:   dtoverlay=vc4-fkms-v3d,<param>
+Params: cma-256                 CMA is 256MB, 256MB-aligned (needs 1GB)
+        cma-192                 CMA is 192MB, 256MB-aligned (needs 1GB)
+        cma-128                 CMA is 128MB, 128MB-aligned
+        cma-96                  CMA is 96MB, 128MB-aligned
+        cma-64                  CMA is 64MB, 64MB-aligned
+
+
+Name:   vc4-kms-v3d
+Info:   Enable Eric Anholt's DRM VC4 HDMI/HVS/V3D driver. Running startx or
+        booting to GUI while this overlay is in use will cause interesting
+        lockups.
+Load:   dtoverlay=vc4-kms-v3d,<param>
+Params: cma-256                 CMA is 256MB, 256MB-aligned (needs 1GB)
+        cma-192                 CMA is 192MB, 256MB-aligned (needs 1GB)
+        cma-128                 CMA is 128MB, 128MB-aligned
+        cma-96                  CMA is 96MB, 128MB-aligned
+        cma-64                  CMA is 64MB, 64MB-aligned
+
+
+Name:   vga666
+Info:   Overlay for the Fen Logic VGA666 board
+        This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
+        after the kernel has started.
+Load:   dtoverlay=vga666
+Params: <None>
+
+
+Name:   w1-gpio
+Info:   Configures the w1-gpio Onewire interface module.
+        Use this overlay if you *don't* need a GPIO to drive an external pullup.
+Load:   dtoverlay=w1-gpio,<param>=<val>
+Params: gpiopin                 GPIO for I/O (default "4")
+
+        pullup                  Non-zero, "on", or "y" to enable the parasitic
+                                power (2-wire, power-on-data) feature
+
+
+Name:   w1-gpio-pullup
+Info:   Configures the w1-gpio Onewire interface module.
+        Use this overlay if you *do* need a GPIO to drive an external pullup.
+Load:   dtoverlay=w1-gpio-pullup,<param>=<val>
+Params: gpiopin                 GPIO for I/O (default "4")
+
+        pullup                  Non-zero, "on", or "y" to enable the parasitic
+                                power (2-wire, power-on-data) feature
+
+        extpullup               GPIO for external pullup (default "5")
+
+
+Name:   wittypi
+Info:   Configures the wittypi RTC module.
+Load:   dtoverlay=wittypi,<param>=<val>
+Params: led_gpio                GPIO for LED (default "17")
+        led_trigger             Choose which activity the LED tracks (default
+                                "default-on")
+
+
+Troubleshooting
+===============
+
+If you are experiencing problems that you think are DT-related, enable DT
+diagnostic output by adding this to /boot/config.txt:
+
+    dtdebug=on
+
+and rebooting. Then run:
+
+    sudo vcdbg log msg
+
+and look for relevant messages.
+
+Further reading
+===============
+
+This is only meant to be a quick introduction to the subject of Device Tree on
+Raspberry Pi. There is a more complete explanation here:
+
+http://www.raspberrypi.org/documentation/configuration/device-tree.md
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
@@ -0,0 +1,40 @@
+// Definitions for ADAU1977 ADC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+    
+       fragment@0 {
+               target = <&i2c>;
+               
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+                       
+                       adau1977: codec@11 {
+                               compatible = "adi,adau1977";
+                               reg = <0x11>;
+                               reset-gpios = <&gpio 5 0>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "adi,adau1977-adc";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/adau7002-simple-overlay.dts
@@ -0,0 +1,52 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+
+    fragment@0 {
+        target = <&i2s>;
+        __overlay__ {
+            status = "okay";
+        };
+    };
+
+    fragment@1 {
+        target-path = "/";
+        __overlay__ {
+                adau7002_codec: adau7002-codec {
+                #sound-dai-cells = <0>;
+                compatible = "adi,adau7002";
+/*                IOVDD-supply = <&supply>;*/
+                status = "okay";
+            };
+        };
+    };
+
+    fragment@2 {
+        target = <&sound>;
+            sound_overlay: __overlay__ {
+            compatible = "simple-audio-card";
+            simple-audio-card,format = "i2s";
+            simple-audio-card,name = "adau7002";
+            simple-audio-card,bitclock-slave = <&dailink0_slave>;
+            simple-audio-card,frame-slave = <&dailink0_slave>;
+            simple-audio-card,widgets =
+                    "Microphone", "Microphone Jack";
+            simple-audio-card,routing =
+                    "PDM_DAT", "Microphone Jack";
+            status = "okay";
+            simple-audio-card,cpu {
+                sound-dai = <&i2s>;
+            };
+            dailink0_slave: simple-audio-card,codec {
+                sound-dai = <&adau7002_codec>;
+            };
+        };
+    };
+
+
+    __overrides__ {
+        card-name = <&sound_overlay>,"simple-audio-card,name";
+    };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ads1015-overlay.dts
@@ -0,0 +1,98 @@
+/*
+ * 2016 - Erik Sejr
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+    /* ----------- ADS1015 ------------ */
+    fragment@0 {
+        target = <&i2c_arm>;
+        __overlay__ {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            status = "okay";
+            ads1015: ads1015 {
+                compatible = "ti,ads1015";
+                status = "okay";
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0x48>;
+            };
+        };
+    };
+
+    fragment@1 {
+        target-path = "i2c_arm/ads1015";
+        __overlay__ {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            channel_a: channel_a {
+                reg = <4>;
+                ti,gain = <2>;
+                ti,datarate = <4>;
+            };
+        };
+    };
+
+    fragment@2 {
+        target-path = "i2c_arm/ads1015";
+        __dormant__ {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            channel_b: channel_b {
+                reg = <5>;
+                ti,gain = <2>;
+                ti,datarate = <4>;
+            };
+        };
+    };
+
+    fragment@3 {
+        target-path = "i2c_arm/ads1015";
+        __dormant__ {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            channel_c: channel_c {
+                reg = <6>;
+                ti,gain = <2>;
+                ti,datarate = <4>;
+            };
+        };
+    };
+
+    fragment@4 {
+        target-path = "i2c_arm/ads1015";
+        __dormant__ {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            channel_d: channel_d {
+                reg = <7>;
+                ti,gain = <2>;
+                ti,datarate = <4>;
+            };
+        };
+    };
+
+    __overrides__ {
+        addr =            <&ads1015>,"reg:0";
+        cha_enable =      <0>,"=1";
+        cha_cfg =         <&channel_a>,"reg:0";
+        cha_gain =        <&channel_a>,"ti,gain:0";
+        cha_datarate =    <&channel_a>,"ti,datarate:0";
+        chb_enable =      <0>,"=2";
+        chb_cfg =         <&channel_b>,"reg:0";
+        chb_gain =        <&channel_b>,"ti,gain:0";
+        chb_datarate =    <&channel_b>,"ti,datarate:0";
+        chc_enable =      <0>,"=3";
+        chc_cfg =         <&channel_c>,"reg:0";
+        chc_gain =        <&channel_c>,"ti,gain:0";
+        chc_datarate =    <&channel_c>,"ti,datarate:0";
+        chd_enable =      <0>,"=4";
+        chd_cfg =         <&channel_d>,"reg:0";
+        chd_gain =        <&channel_d>,"ti,gain:0";
+        chd_datarate =    <&channel_d>,"ti,datarate:0";
+   };
+
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ads1115-overlay.dts
@@ -0,0 +1,103 @@
+/*
+ * TI ADS1115 multi-channel ADC overlay
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ads1115: ads1115 {
+                               compatible = "ti,ads1115";
+                               status = "okay";
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               reg = <0x48>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target-path = "i2c_arm/ads1115";
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       channel_a: channel_a {
+                               reg = <4>;
+                               ti,gain = <1>;
+                               ti,datarate = <7>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target-path = "i2c_arm/ads1115";
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       channel_b: channel_b {
+                               reg = <5>;
+                               ti,gain = <1>;
+                               ti,datarate = <7>;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target-path = "i2c_arm/ads1115";
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       channel_c: channel_c {
+                               reg = <6>;
+                               ti,gain = <1>;
+                               ti,datarate = <7>;
+                       };
+               };
+       };
+
+       fragment@4 {
+               target-path = "i2c_arm/ads1115";
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       channel_d: channel_d {
+                               reg = <7>;
+                               ti,gain = <1>;
+                               ti,datarate = <7>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               addr =            <&ads1115>,"reg:0";
+               cha_enable =      <0>,"=1";
+               cha_cfg =         <&channel_a>,"reg:0";
+               cha_gain =        <&channel_a>,"ti,gain:0";
+               cha_datarate =    <&channel_a>,"ti,datarate:0";
+               chb_enable =      <0>,"=2";
+               chb_cfg =         <&channel_b>,"reg:0";
+               chb_gain =        <&channel_b>,"ti,gain:0";
+               chb_datarate =    <&channel_b>,"ti,datarate:0";
+               chc_enable =      <0>,"=3";
+               chc_cfg =         <&channel_c>,"reg:0";
+               chc_gain =        <&channel_c>,"ti,gain:0";
+               chc_datarate =    <&channel_c>,"ti,datarate:0";
+               chd_enable =      <0>,"=4";
+               chd_cfg =         <&channel_d>,"reg:0";
+               chd_gain =        <&channel_d>,"ti,gain:0";
+               chd_datarate =    <&channel_d>,"ti,datarate:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ads7846-overlay.dts
@@ -0,0 +1,89 @@
+/*
+ * Generic Device Tree overlay for the ADS7846 touch controller
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       ads7846_pins: ads7846_pins {
+                               brcm,pins = <255>; /* illegal default value */
+                               brcm,function = <0>; /* in */
+                               brcm,pull = <0>; /* none */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       ads7846: ads7846@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&ads7846_pins>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <255 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 255 0>;
+
+                               /* driver defaults */
+                               ti,x-min = /bits/ 16 <0>;
+                               ti,y-min = /bits/ 16 <0>;
+                               ti,x-max = /bits/ 16 <0x0FFF>;
+                               ti,y-max = /bits/ 16 <0x0FFF>;
+                               ti,pressure-min = /bits/ 16 <0>;
+                               ti,pressure-max = /bits/ 16 <0xFFFF>;
+                               ti,x-plate-ohms = /bits/ 16 <400>;
+                       };
+               };
+       };
+       __overrides__ {
+               cs =     <&ads7846>,"reg:0";
+               speed =  <&ads7846>,"spi-max-frequency:0";
+               penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */
+                        <&ads7846>,"interrupts:0",
+                        <&ads7846>,"pendown-gpio:4";
+               penirq_pull = <&ads7846_pins>,"brcm,pull:0";
+               swapxy = <&ads7846>,"ti,swap-xy?";
+               xmin =   <&ads7846>,"ti,x-min;0";
+               ymin =   <&ads7846>,"ti,y-min;0";
+               xmax =   <&ads7846>,"ti,x-max;0";
+               ymax =   <&ads7846>,"ti,y-max;0";
+               pmin =   <&ads7846>,"ti,pressure-min;0";
+               pmax =   <&ads7846>,"ti,pressure-max;0";
+               xohms =  <&ads7846>,"ti,x-plate-ohms;0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/akkordion-iqdacplus-overlay.dts
@@ -0,0 +1,49 @@
+// Definitions for Digital Dreamtime Akkordion using IQaudIO DAC+ or DACZero
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4c>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               frag2: __overlay__ {
+                       compatible = "iqaudio,iqaudio-dac";
+                       card_name = "Akkordion";
+                       dai_name = "IQaudIO DAC";
+                       dai_stream_name = "IQaudIO DAC HiFi";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/allo-boss-dac-pcm512x-audio-overlay.dts
@@ -0,0 +1,59 @@
+/*
+ * Definitions for Allo Boss DAC board
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/clocks";
+               __overlay__ {
+                       boss_osc: boss_osc {
+                               compatible = "allo,dac-clk";
+                               #clock-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4d {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               clocks = <&boss_osc>;
+                               reg = <0x4d>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&sound>;
+               boss_dac: __overlay__ {
+                       compatible = "allo,boss-dac";
+                       i2s-controller = <&i2s>;
+                       mute-gpios = <&gpio 6 1>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&boss_dac>,"allo,24db_digital_gain?";
+               slave = <&boss_dac>,"allo,slave?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/allo-digione-overlay.dts
@@ -0,0 +1,44 @@
+// Definitions for Allo DigiOne
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                               wlf,reset-gpio = <&gpio 17 0>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "allo,allo-digione";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+                       clock44-gpio = <&gpio 5 0>;
+                       clock48-gpio = <&gpio 6 0>;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
@@ -0,0 +1,57 @@
+/*
+ * Definitions for Allo Katana DAC boards
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       #sound-dai-cells = <0>;
+                       status = "okay";
+                       cpu_port: port {
+                               cpu_endpoint: endpoint {
+                                       remote-endpoint = <&codec_endpoint>;
+                                       bitclock-master = <&codec_endpoint>;
+                                       frame-master = <&codec_endpoint>;
+                                       dai-format = "i2s";
+                               };
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       allo-katana-codec@30 {
+                               #sound-dai-cells = <0>;
+                               compatible = "allo,allo-katana-codec";
+                               reg = <0x30>;
+                               port {
+                                       codec_endpoint: endpoint {
+                                       remote-endpoint = <&cpu_endpoint>;
+                                       };
+                               };
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               katana_dac: __overlay__ {
+                       compatible = "audio-graph-card";
+                       label = "Allo Katana";
+                       dais = <&cpu_port>;
+                       status = "okay";
+               };
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/allo-piano-dac-pcm512x-audio-overlay.dts
@@ -0,0 +1,54 @@
+/*
+ * Definitions for Allo Piano DAC (2.0/2.1) boards
+ *
+ * NB. The Piano DAC 2.1 board contains 2x TI PCM5142 DAC's. One DAC is stereo
+ * (left/right) and the other provides a subwoofer output, using DSP on the
+ * chip for digital high/low pass crossover.
+ * The initial support for this hardware, that doesn't require any codec driver
+ * modifications, uses only one DAC chip for stereo (left/right) output, the
+ * chip with 0x4c slave address. The other chip at 0x4d is currently ignored!
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5142@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5142";
+                               reg = <0x4c>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               piano_dac: __overlay__ {
+                       compatible = "allo,piano-dac";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain =
+                       <&piano_dac>,"allo,24db_digital_gain?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/allo-piano-dac-plus-pcm512x-audio-overlay.dts
@@ -0,0 +1,55 @@
+// Definitions for Piano DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       allo_pcm5122_4c: pcm5122@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4c>;
+                               status = "okay";
+                       };
+                       allo_pcm5122_4d: pcm5122@4d {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4d>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               piano_dac: __overlay__ {
+                       compatible = "allo,piano-dac-plus";
+                       audio-codec = <&allo_pcm5122_4c &allo_pcm5122_4d>;
+                       i2s-controller = <&i2s>;
+                       mute1-gpios = <&gpio 6 1>;
+                       mute2-gpios = <&gpio 25 1>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain =
+                       <&piano_dac>,"allo,24db_digital_gain?";
+               glb_mclk =
+                       <&piano_dac>,"allo,glb_mclk?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
@@ -0,0 +1,57 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+
+    fragment@0 {
+        target = <&sound>;
+        __overlay__ {
+            compatible = "simple-audio-card";
+            simple-audio-card,name = "ApplePi-DAC";
+
+            status = "okay";
+
+            playback_link: simple-audio-card,dai-link@1 {
+                format = "i2s";
+
+                p_cpu_dai: cpu {
+                    sound-dai = <&i2s>;
+                    dai-tdm-slot-num = <2>;
+                    dai-tdm-slot-width = <32>;
+                };
+
+                p_codec_dai: codec {
+                    sound-dai = <&codec_out>;
+                };
+            };
+        };
+    };
+
+    fragment@1 {
+        target-path = "/";
+        __overlay__ {
+            codec_out: pcm1794a-codec {
+                #sound-dai-cells = <0>;
+                compatible = "ti,pcm1794a";
+                status = "okay";
+            };
+        };
+    };
+
+    fragment@2 {
+        target = <&i2s>;
+        __overlay__ {
+            #sound-dai-cells = <0>;
+            status = "okay";
+        };
+    };
+};
+
+/*
+   Written by: Leonid Ayzenshtat
+   Company: Orchard Audio (www.orchardaudio.com)
+
+   compile with:
+   dtc -@ -H epapr -O dtb -o ApplePi-DAC.dtbo -W no-unit_address_vs_reg ApplePi-DAC.dts
+*/
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
@@ -0,0 +1,57 @@
+/dts-v1/;
+/plugin/;
+
+/* Overlay for Atmel AT86RF233 IEEE 802.15.4 WPAN transceiver on spi0.0 */
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       lowpan0: at86rf233@0 {
+                               compatible = "atmel,at86rf233";
+                               reg = <0>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <23 4>; /* active high */
+                               reset-gpio = <&gpio 24 1>;
+                               sleep-gpio = <&gpio 25 1>;
+                               spi-max-frequency = <3000000>;
+                               xtal-trim = /bits/ 8 <0xf>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&gpio>;
+               __overlay__ {
+                       lowpan0_pins: lowpan0_pins {
+                               brcm,pins = <23 24 25>;
+                               brcm,function = <0 1 1>; /* in out out */
+                       };
+               };
+       };
+
+       __overrides__ {
+               interrupt = <&lowpan0>, "interrupts:0",
+                       <&lowpan0_pins>, "brcm,pins:0";
+               reset     = <&lowpan0>, "reset-gpio:4",
+                       <&lowpan0_pins>, "brcm,pins:4";
+               sleep     = <&lowpan0>, "sleep-gpio:4",
+                       <&lowpan0_pins>, "brcm,pins:8";
+               speed     = <&lowpan0>, "spi-max-frequency:0";
+               trim      = <&lowpan0>, "xtal-trim.0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/audioinjector-addons-overlay.dts
@@ -0,0 +1,59 @@
+// Definitions for audioinjector.net audio add on soundcard
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       cs42448: cs42448@48 {
+                               #sound-dai-cells = <0>;
+                               compatible = "cirrus,cs42448";
+                               reg = <0x48>;
+                               clocks = <&cs42448_mclk>;
+                               clock-names = "mclk";
+                               VA-supply = <&vdd_5v0_reg>;
+                               VD-supply = <&vdd_3v3_reg>;
+                               VLS-supply = <&vdd_3v3_reg>;
+                               VLC-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+
+                       cs42448_mclk: codec-mclk {
+                               compatible = "fixed-clock";
+                               #clock-cells = <0>;
+                               clock-frequency = <49152000>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               snd: __overlay__ {
+                       compatible = "ai,audioinjector-octo-soundcard";
+                       mult-gpios = <&gpio 27 0>, <&gpio 22 0>, <&gpio 23 0>,
+                                    <&gpio 24 0>;
+                       reset-gpios = <&gpio 5 0>;
+                       i2s-controller = <&i2s>;
+                       codec = <&cs42448>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               non-stop-clocks = <&snd>, "non-stop-clocks?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/audioinjector-wm8731-audio-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for audioinjector.net audio add on soundcard
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8731@1a {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8731";
+                               reg = <0x1a>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "ai,audioinjector-pi-soundcard";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/audremap-overlay.dts
@@ -0,0 +1,19 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target = <&audio_pins>;
+                frag0: __overlay__ {
+                        brcm,pins = < 12 13 >;
+                        brcm,function = < 4 >; /* alt0 alt0 */
+                };
+        };
+
+       __overrides__ {
+               swap_lr = <&frag0>, "swap_lr?";
+               enable_jack = <&frag0>, "enable_jack?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
@@ -0,0 +1,79 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&mmc>;
+               sdio_wifi: __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sdio_pins>;
+                       bus-width = <4>;
+                       brcm,overclock-50 = <35>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       sdio_pins: sdio_pins {
+                               brcm,pins = <34 35 36 37 38 39>;
+                               brcm,function = <7>; /* ALT3 = SD1 */
+                               brcm,pull = <0 2 2 2 2 2>;
+                       };
+
+                       power_ctrl_pins: power_ctrl_pins {
+                               brcm,pins = <40>;
+                               brcm,function = <1>; // out
+                       };
+               };
+       };
+
+       fragment@2 {
+               target-path = "/";
+               __overlay__ {
+                       // We should investigate how to switch to mmc-pwrseq-sd8787
+                       // Currently that module requires two GPIOs to function since it
+                       // targets a slightly different chip
+                       power_ctrl: power_ctrl {
+                               compatible = "gpio-poweroff";
+                               gpios = <&gpio 40 1>;
+                               force;
+                       };
+
+                       i2c_soft: i2c@0 {
+                               compatible = "i2c-gpio";
+                               gpios = <&gpio 43 0 /* sda */ &gpio 42 0 /* scl */>;
+                               i2c-gpio,delay-us = <2>; /* ~100 kHz */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2c_soft>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       gpio_expander: gpio_expander@20 {
+                               compatible = "nxp,pca9554";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               reg = <0x20>;
+                               status = "okay";
+                       };
+
+                       // rtc clock
+                       ds1307: ds1307@68 {
+                               compatible = "maxim,ds1307";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts
@@ -0,0 +1,23 @@
+// Definitions for BMP085/BMP180 digital barometric pressure and temperature sensors from Bosch Sensortec
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target = <&i2c_arm>;
+                __overlay__ {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        status = "okay";
+
+                        bmp085@77 {
+                                compatible = "bosch,bmp085";
+                                reg = <0x77>;
+                                default-oversampling = <3>;
+                                status = "okay";
+                        };
+                };
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dht11-overlay.dts
@@ -0,0 +1,39 @@
+/*
+ * Overlay for the DHT11/21/22 humidity/temperature sensor modules.
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+
+                       dht11: dht11@0 {
+                               compatible = "dht11";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&dht11_pins>;
+                               gpios = <&gpio 4 0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       dht11_pins: dht11_pins {
+                               brcm,pins = <4>;
+                               brcm,function = <0>; // in
+                               brcm,pull = <0>; // off
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpiopin = <&dht11_pins>,"brcm,pins:0",
+                       <&dht11>,"gpios:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for Dion Audio LOCO DAC-AMP
+
+/*
+ * PCM5242 DAC (in hardware mode) and TPA3118 AMP.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       pcm5102a-codec {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5102a";
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "dionaudio,loco-pcm5242-tpa3118";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dionaudio-loco-v2-overlay.dts
@@ -0,0 +1,49 @@
+/*
+ * Definitions for Dion Audio LOCO-V2 DAC-AMP
+ *  eg. dtoverlay=dionaudio-loco-v2
+ *
+ * PCM5242 DAC (in software mode) and TPA3255 AMP.
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&sound>;
+               frag0: __overlay__ {
+                       compatible = "dionaudio,dionaudio-loco-v2";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4d>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&frag0>,"dionaudio,24db_digital_gain?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dpi18-overlay.dts
@@ -0,0 +1,31 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       // There is no DPI driver module, but we need a platform device
+       // node (that doesn't already use pinctrl) to hang the pinctrl
+       // reference on - leds will do
+
+       fragment@0 {
+               target = <&leds>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&dpi18_pins>;
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       dpi18_pins: dpi18_pins {
+                               brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
+                                            12 13 14 15 16 17 18 19 20
+                                            21>;
+                               brcm,function = <6>; /* alt2 */
+                               brcm,pull = <0>; /* no pull */
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dpi24-overlay.dts
@@ -0,0 +1,31 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       // There is no DPI driver module, but we need a platform device
+       // node (that doesn't already use pinctrl) to hang the pinctrl
+       // reference on - leds will do
+
+       fragment@0 {
+               target = <&leds>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&dpi24_pins>;
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       dpi24_pins: dpi24_pins {
+                               brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
+                                            12 13 14 15 16 17 18 19 20
+                                            21 22 23 24 25 26 27>;
+                               brcm,function = <6>; /* alt2 */
+                               brcm,pull = <0>; /* no pull */
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dwc-otg-overlay.dts
@@ -0,0 +1,20 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&usb>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               __overlay__ {
+                       compatible = "brcm,bcm2708-usb";
+                       reg = <0x7e980000 0x10000>,
+                             <0x7e006000 0x1000>;
+                       interrupts = <2 0>,
+                                    <1 9>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dwc2-overlay.dts
@@ -0,0 +1,28 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&usb>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               dwc2_usb: __overlay__ {
+                       compatible = "brcm,bcm2835-usb";
+                       reg = <0x7e980000 0x10000>;
+                       interrupts = <1 9>;
+                       dr_mode = "otg";
+                       g-np-tx-fifo-size = <32>;
+                       g-rx-fifo-size = <256>;
+                       g-tx-fifo-size = <512 512 512 512 512 256 256>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               dr_mode = <&dwc2_usb>, "dr_mode";
+               g-np-tx-fifo-size = <&dwc2_usb>,"g-np-tx-fifo-size:0";
+               g-rx-fifo-size = <&dwc2_usb>,"g-rx-fifo-size:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/enc28j60-overlay.dts
@@ -0,0 +1,53 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       eth1: enc28j60@0{
+                               compatible = "microchip,enc28j60";
+                               reg = <0>; /* CE0 */
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&eth1_pins>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <25 0x2>; /* falling edge */
+                               spi-max-frequency = <12000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&gpio>;
+               __overlay__ {
+                       eth1_pins: eth1_pins {
+                               brcm,pins = <25>;
+                               brcm,function = <0>; /* in */
+                               brcm,pull = <0>; /* none */
+                       };
+               };
+       };
+
+       __overrides__ {
+               int_pin = <&eth1>, "interrupts:0",
+                         <&eth1_pins>, "brcm,pins:0";
+               speed   = <&eth1>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/enc28j60-spi2-overlay.dts
@@ -0,0 +1,47 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller - SPI2 Compute Module
+// Interrupt pin: 39
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&spi2>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       eth1: enc28j60@0{
+                               compatible = "microchip,enc28j60";
+                               reg = <0>; /* CE0 */
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&eth1_pins>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <39 0x2>; /* falling edge */
+                               spi-max-frequency = <12000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       eth1_pins: eth1_pins {
+                               brcm,pins = <39>;
+                               brcm,function = <0>; /* in */
+                               brcm,pull = <0>; /* none */
+                       };
+               };
+       };
+
+       __overrides__ {
+               int_pin = <&eth1>, "interrupts:0",
+                         <&eth1_pins>, "brcm,pins:0";
+               speed   = <&eth1>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/exc3000-overlay.dts
@@ -0,0 +1,48 @@
+// Device tree overlay for I2C connected EETI EXC3000 multiple touch controller
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       exc3000_pins: exc3000_pins {
+                               brcm,pins = <4>; // interrupt
+                               brcm,function = <0>; // in
+                               brcm,pull = <2>; // pull-up
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       exc3000: exc3000@2a {
+                               compatible = "eeti,exc3000";
+                               reg = <0x2a>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&exc3000_pins>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <4 8>; // active low level-sensitive
+                               touchscreen-size-x = <4096>;
+                               touchscreen-size-y = <4096>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               interrupt = <&exc3000_pins>,"brcm,pins:0",
+                       <&exc3000>,"interrupts:0";
+               sizex = <&exc3000>,"touchscreen-size-x:0";
+               sizey = <&exc3000>,"touchscreen-size-y:0";
+               invx = <&exc3000>,"touchscreen-inverted-x?";
+               invy = <&exc3000>,"touchscreen-inverted-y?";
+               swapxy = <&exc3000>,"touchscreen-swapped-x-y?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/fe-pi-audio-overlay.dts
@@ -0,0 +1,70 @@
+// Definitions for Fe-Pi Audio
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&clocks>;
+               __overlay__ {
+                       sgtl5000_mclk: sgtl5000_mclk {
+                               compatible = "fixed-clock";
+                               #clock-cells = <0>;
+                               clock-frequency = <12288000>;
+                               clock-output-names = "sgtl5000-mclk";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&soc>;
+               __overlay__ {
+                       reg_1v8: reg_1v8@0 {
+                               compatible = "regulator-fixed";
+                               regulator-name = "1V8";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       sgtl5000@0a {
+                               #sound-dai-cells = <0>;
+                               compatible = "fepi,sgtl5000";
+                               reg = <0x0a>;
+                               clocks = <&sgtl5000_mclk>;
+                               micbias-resistor-k-ohms = <2>;
+                               micbias-voltage-m-volts = <3000>;
+                               VDDA-supply = <&vdd_3v3_reg>;
+                               VDDIO-supply = <&vdd_3v3_reg>;
+                               VDDD-supply = <&reg_1v8>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@4 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "fe-pi,fe-pi-audio";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/goodix-overlay.dts
@@ -0,0 +1,46 @@
+// Device tree overlay for I2C connected Goodix gt9271 multiple touch controller
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       goodix_pins: goodix_pins {
+                               brcm,pins = <4 17>; // interrupt and reset
+                               brcm,function = <0 0>; // in
+                               brcm,pull = <2 2>; // pull-up
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       gt9271: gt9271@14 {
+                               compatible = "goodix,gt9271";
+                               reg = <0x14>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&goodix_pins>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <4 2>; // high-to-low edge triggered
+                               irq-gpios = <&gpio 4 0>; // Pin7 on GPIO header
+                               reset-gpios = <&gpio 17 0>; // Pin11 on GPIO header
+                       };
+               };
+       };
+
+       __overrides__ {
+               interrupt = <&goodix_pins>,"brcm,pins:0",
+                       <&gt9271>,"interrupts:0",
+                       <&gt9271>,"irq-gpios:4";
+               reset = <&goodix_pins>,"brcm,pins:4",
+                       <&gt9271>,"reset-gpios:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/googlevoicehat-soundcard-overlay.dts
@@ -0,0 +1,49 @@
+// Definitions for Google voiceHAT v1 soundcard overlay
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       googlevoicehat_pins: googlevoicehat_pins {
+                               brcm,pins = <16>;
+                               brcm,function = <1>; /* out */
+                               brcm,pull = <0>; /* up */
+                       };
+               };
+       };
+
+
+       fragment@2 {
+               target-path = "/";
+               __overlay__ {
+                       voicehat-codec {
+                               #sound-dai-cells = <0>;
+                               compatible = "google,voicehat";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&googlevoicehat_pins>;
+                               sdmode-gpios= <&gpio 16 0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "googlevoicehat,googlevoicehat-soundcard";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-ir-overlay.dts
@@ -0,0 +1,48 @@
+// Definitions for ir-gpio module
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target-path = "/";
+                __overlay__ {
+                        gpio_ir: ir-receiver@12 {
+                                compatible = "gpio-ir-receiver";
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&gpio_ir_pins>;
+
+                                // pin number, high or low
+                                gpios = <&gpio 18 1>;
+
+                                // parameter for keymap name
+                                linux,rc-map-name = "rc-rc6-mce";
+
+                                status = "okay";
+                        };
+                };
+        };
+
+        fragment@1 {
+                target = <&gpio>;
+                __overlay__ {
+                        gpio_ir_pins: gpio_ir_pins@12 {
+                                brcm,pins = <18>;                       // pin 18
+                                brcm,function = <0>;                    // in
+                                brcm,pull = <1>;                        // down
+                        };
+                };
+        };
+
+        __overrides__ {
+                // parameters
+                gpio_pin =      <&gpio_ir>,"gpios:4",           // pin number
+                                <&gpio_ir>,"reg:0",
+                                <&gpio_ir_pins>,"brcm,pins:0",
+                                <&gpio_ir_pins>,"reg:0";
+                gpio_pull = <&gpio_ir_pins>,"brcm,pull:0";              // pull-up/down state
+
+                rc-map-name = <&gpio_ir>,"linux,rc-map-name";           // default rc map
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-ir-tx-overlay.dts
@@ -0,0 +1,36 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       gpio_ir_tx_pins: gpio_ir_tx_pins@12 {
+                               brcm,pins = <18>;
+                               brcm,function = <1>;    // out
+                       };
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       gpio_ir_tx: gpio-ir-transmitter@12 {
+                               compatible = "gpio-ir-tx";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&gpio_ir_tx_pins>;
+                               gpios = <&gpio 18 0>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpio_pin = <&gpio_ir_tx>, "gpios:4",            // pin number
+                          <&gpio_ir_tx>, "reg:0",
+                          <&gpio_ir_tx_pins>, "brcm,pins:0",
+                          <&gpio_ir_tx_pins>, "reg:0";
+               invert = <&gpio_ir_tx>, "gpios:8";              // 1 = active low
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-key-overlay.dts
@@ -0,0 +1,48 @@
+// Definitions for gpio-key module
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               // Configure the gpio pin controller
+               target = <&gpio>;
+               __overlay__ {
+                       pin_state: button_pins@0 {
+                               brcm,pins = <3>; // gpio number
+                               brcm,function = <0>; // 0 = input, 1 = output
+                               brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
+                       };
+               };
+       };
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       button: button@0 {
+                               compatible = "gpio-keys";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&pin_state>;
+                               status = "okay";
+
+                               key: key {
+                                       linux,code = <116>;
+                                       gpios = <&gpio 3 1>;
+                                       label = "KEY_POWER";
+                               };
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpio =       <&key>,"gpios:4",
+                            <&button>,"reg:0",
+                            <&pin_state>,"brcm,pins:0",
+                            <&pin_state>,"reg:0";
+               label =      <&key>,"label";
+               keycode =    <&key>,"linux,code:0";
+               gpio_pull =  <&pin_state>,"brcm,pull:0";
+               active_low = <&key>,"gpios:8";
+       };
+
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-no-irq-overlay.dts
@@ -0,0 +1,14 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835";
+
+       fragment@0 {
+               // Configure the gpio pin controller
+               target = <&gpio>;
+               __overlay__ {
+                           interrupts;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts
@@ -0,0 +1,36 @@
+// Definitions for gpio-poweroff module
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       power_ctrl: power_ctrl {
+                               compatible = "gpio-poweroff";
+                               gpios = <&gpio 26 0>;
+                               force;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       power_ctrl_pins: power_ctrl_pins {
+                               brcm,pins = <26>;
+                               brcm,function = <1>; // out
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpiopin =       <&power_ctrl>,"gpios:4",
+                               <&power_ctrl_pins>,"brcm,pins:0";
+               active_low =    <&power_ctrl>,"gpios:8";
+               input =         <&power_ctrl>,"input?";
+               export =        <&power_ctrl>,"export?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/gpio-shutdown-overlay.dts
@@ -0,0 +1,80 @@
+// Definitions for gpio-poweroff module
+/dts-v1/;
+/plugin/;
+
+// This overlay sets up an input device that generates KEY_POWER events
+// when a given GPIO pin changes. It defaults to using GPIO3, which can
+// also be used to wake up (start) the Rpi again after shutdown. Since
+// wakeup is active-low, this defaults to active-low with a pullup
+// enabled, but all of this can be changed using overlay parameters (but
+// note that GPIO3 has an external pullup on at least some boards).
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               // Configure the gpio pin controller
+               target = <&gpio>;
+               __overlay__ {
+                       // Define a pinctrl state, that sets up the gpio
+                       // as an input with a pullup enabled. This does
+                       // not take effect by itself, only when referenced
+                       // by a "pinctrl client", as is done below. See:
+                       //   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+                       //   https://www.kernel.org/doc/Documentation/devicetree/bindings/pinctrl/brcm,bcm2835-gpio.txt
+                       pin_state: shutdown_button_pins {
+                               brcm,pins = <3>; // gpio number
+                               brcm,function = <0>; // 0 = input, 1 = output
+                               brcm,pull = <2>; // 0 = none, 1 = pull down, 2 = pull up
+                       };
+               };
+       };
+       fragment@1 {
+               // Add a new device to the /soc devicetree node
+               target-path = "/soc";
+               __overlay__ {
+                       shutdown_button {
+                               // Let the gpio-keys driver handle this device. See:
+                               // https://www.kernel.org/doc/Documentation/devicetree/bindings/input/gpio-keys.txt
+                               compatible = "gpio-keys";
+
+                               // Declare a single pinctrl state (referencing the one declared above) and name it
+                               // default, so it is activated automatically.
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&pin_state>;
+
+                               // Enable this device
+                               status = "okay";
+
+                               // Define a single key, called "shutdown" that monitors the gpio and sends KEY_POWER
+                               // (keycode 116, see
+                               // https://github.com/torvalds/linux/blob/v4.12/include/uapi/linux/input-event-codes.h#L190)
+                               button: shutdown {
+                                       label = "shutdown";
+                                       linux,code = <116>; // KEY_POWER
+                                       gpios = <&gpio 3 1>;
+                               };
+                       };
+               };
+       };
+
+       // This defines parameters that can be specified when loading
+       // the overlay. Each foo = line specifies one parameter, named
+       // foo. The rest of the specification gives properties where the
+       // parameter value is inserted into (changing the values above
+       // or adding new ones).
+       __overrides__ {
+               // Allow overriding the GPIO number.
+               gpio_pin = <&button>,"gpios:4",
+                          <&pin_state>,"brcm,pins:0";
+
+               // Allow changing the internal pullup/down state. 0 = none, 1 = pulldown, 2 = pullup
+               // Note that GPIO3 and GPIO2 are the I2c pins and have an external pullup (at least
+                // on some boards).
+               gpio_pull = <&pin_state>,"brcm,pull:0";
+
+               // Allow setting the active_low flag. 0 = active high, 1 = active low
+               active_low = <&button>,"gpios:8";
+       };
+
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Amp/Amp+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       tas5713@1b {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,tas5713";
+                               reg = <0x1b>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "hifiberry,hifiberry-amp";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       pcm5102a-codec {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5102a";
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "hifiberry,hifiberry-dac";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts
@@ -0,0 +1,59 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/clocks";
+               __overlay__ {
+                       dacpro_osc: dacpro_osc {
+                               compatible = "hifiberry,dacpro-clk";
+                               #clock-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4d {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4d>;
+                               clocks = <&dacpro_osc>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&sound>;
+               hifiberry_dacplus: __overlay__ {
+                       compatible = "hifiberry,hifiberry-dacplus";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain =
+                       <&hifiberry_dacplus>,"hifiberry,24db_digital_gain?";
+               slave = <&hifiberry_dacplus>,"hifiberry-dacplus,slave?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts
@@ -0,0 +1,41 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "hifiberry,hifiberry-digi";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-digi-pro-overlay.dts
@@ -0,0 +1,43 @@
+// Definitions for HiFiBerry Digi Pro
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "hifiberry,hifiberry-digi";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+                       clock44-gpio = <&gpio 5 0>;
+                       clock48-gpio = <&gpio 6 0>;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hy28a-overlay.dts
@@ -0,0 +1,93 @@
+/*
+ * Device Tree overlay for HY28A display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       hy28a_pins: hy28a_pins {
+                               brcm,pins = <17 25 18>;
+                               brcm,function = <0 1 1>; /* in out out */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       hy28a: hy28a@0{
+                               compatible = "ilitek,ili9320";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&hy28a_pins>;
+
+                               spi-max-frequency = <32000000>;
+                               spi-cpol;
+                               spi-cpha;
+                               rotate = <270>;
+                               bgr;
+                               fps = <50>;
+                               buswidth = <8>;
+                               startbyte = <0x70>;
+                               reset-gpios = <&gpio 25 0>;
+                               led-gpios = <&gpio 18 1>;
+                               debug = <0>;
+                       };
+
+                       hy28a_ts: hy28a-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <17 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 17 0>;
+                               ti,x-plate-ohms = /bits/ 16 <100>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =         <&hy28a>,"spi-max-frequency:0";
+               rotate =        <&hy28a>,"rotate:0";
+               fps =           <&hy28a>,"fps:0";
+               debug =         <&hy28a>,"debug:0";
+               xohms =         <&hy28a_ts>,"ti,x-plate-ohms;0";
+               resetgpio =     <&hy28a>,"reset-gpios:4",
+                               <&hy28a_pins>, "brcm,pins:4";
+               ledgpio =       <&hy28a>,"led-gpios:4",
+                               <&hy28a_pins>, "brcm,pins:8";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hy28b-overlay.dts
@@ -0,0 +1,148 @@
+/*
+ * Device Tree overlay for HY28b display shield by Texy
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       hy28b_pins: hy28b_pins {
+                               brcm,pins = <17 25 18>;
+                               brcm,function = <0 1 1>; /* in out out */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       hy28b: hy28b@0{
+                               compatible = "ilitek,ili9325";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&hy28b_pins>;
+
+                               spi-max-frequency = <48000000>;
+                               spi-cpol;
+                               spi-cpha;
+                               rotate = <270>;
+                               bgr;
+                               fps = <50>;
+                               buswidth = <8>;
+                               startbyte = <0x70>;
+                               reset-gpios = <&gpio 25 0>;
+                               led-gpios = <&gpio 18 1>;
+
+                               gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
+
+                               init = <0x10000e7 0x0010
+                                       0x1000000 0x0001
+                                       0x1000001 0x0100
+                                       0x1000002 0x0700
+                                       0x1000003 0x1030
+                                       0x1000004 0x0000
+                                       0x1000008 0x0207
+                                       0x1000009 0x0000
+                                       0x100000a 0x0000
+                                       0x100000c 0x0001
+                                       0x100000d 0x0000
+                                       0x100000f 0x0000
+                                       0x1000010 0x0000
+                                       0x1000011 0x0007
+                                       0x1000012 0x0000
+                                       0x1000013 0x0000
+                                       0x2000032
+                                       0x1000010 0x1590
+                                       0x1000011 0x0227
+                                       0x2000032
+                                       0x1000012 0x009c
+                                       0x2000032
+                                       0x1000013 0x1900
+                                       0x1000029 0x0023
+                                       0x100002b 0x000e
+                                       0x2000032
+                                       0x1000020 0x0000
+                                       0x1000021 0x0000
+                                       0x2000032
+                                       0x1000050 0x0000
+                                       0x1000051 0x00ef
+                                       0x1000052 0x0000
+                                       0x1000053 0x013f
+                                       0x1000060 0xa700
+                                       0x1000061 0x0001
+                                       0x100006a 0x0000
+                                       0x1000080 0x0000
+                                       0x1000081 0x0000
+                                       0x1000082 0x0000
+                                       0x1000083 0x0000
+                                       0x1000084 0x0000
+                                       0x1000085 0x0000
+                                       0x1000090 0x0010
+                                       0x1000092 0x0000
+                                       0x1000093 0x0003
+                                       0x1000095 0x0110
+                                       0x1000097 0x0000
+                                       0x1000098 0x0000
+                                       0x1000007 0x0133
+                                       0x1000020 0x0000
+                                       0x1000021 0x0000
+                                       0x2000064>;
+                               debug = <0>;
+                       };
+
+                       hy28b_ts: hy28b-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <17 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 17 0>;
+                               ti,x-plate-ohms = /bits/ 16 <100>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =         <&hy28b>,"spi-max-frequency:0";
+               rotate =        <&hy28b>,"rotate:0";
+               fps =           <&hy28b>,"fps:0";
+               debug =         <&hy28b>,"debug:0";
+               xohms =         <&hy28b_ts>,"ti,x-plate-ohms;0";
+               resetgpio =     <&hy28b>,"reset-gpios:4",
+                               <&hy28b_pins>, "brcm,pins:4";
+               ledgpio =       <&hy28b>,"led-gpios:4",
+                               <&hy28b_pins>, "brcm,pins:8";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-bcm2708-overlay.dts
@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __overlay__ {
+                       compatible = "brcm,bcm2708-i2c";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-gpio-overlay.dts
@@ -0,0 +1,43 @@
+// Overlay for i2c_gpio bitbanging host bus.
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       i2c_gpio: i2c@0 {
+                               compatible = "i2c-gpio";
+                               gpios = <&gpio 23 0 /* sda */
+                                        &gpio 24 0 /* scl */
+                                       >;
+                               i2c-gpio,delay-us = <2>;        /* ~100 kHz */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target-path = "/aliases";
+               __overlay__ {
+                       i2c_gpio = "/i2c@0";
+               };
+       };
+
+       fragment@2 {
+               target-path = "/__symbols__";
+               __overlay__ {
+                       i2c_gpio = "/i2c@0";
+               };
+       };
+
+       __overrides__ {
+               i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
+               i2c_gpio_scl = <&i2c_gpio>,"gpios:16";
+               i2c_gpio_delay_us = <&i2c_gpio>,"i2c-gpio,delay-us:0";
+               bus = <&i2c_gpio>, "reg:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-mux-overlay.dts
@@ -0,0 +1,139 @@
+// Umbrella I2C Mux overlay
+
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pca9542: mux@70 {
+                               compatible = "nxp,pca9542";
+                               reg = <0x70>;
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               i2c@0 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <0>;
+                               };
+                               i2c@1 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <1>;
+                               };
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pca9545: mux@70 {
+                               compatible = "nxp,pca9545";
+                               reg = <0x70>;
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               i2c@0 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <0>;
+                               };
+                               i2c@1 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <1>;
+                               };
+                               i2c@2 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <2>;
+                               };
+                               i2c@3 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <3>;
+                               };
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pca9548: mux@70 {
+                               compatible = "nxp,pca9548";
+                               reg = <0x70>;
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               i2c@0 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <0>;
+                               };
+                               i2c@1 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <1>;
+                               };
+                               i2c@2 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <2>;
+                               };
+                               i2c@3 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <3>;
+                               };
+                               i2c@4 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <4>;
+                               };
+                               i2c@5 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <5>;
+                               };
+                               i2c@6 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <6>;
+                               };
+                               i2c@7 {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+                                       reg = <7>;
+                               };
+                       };
+               };
+       };
+
+       __overrides__ {
+               pca9542 = <0>, "+0";
+               pca9545 = <0>, "+1";
+               pca9548 = <0>, "+2";
+
+               addr =  <&pca9542>,"reg:0",
+                       <&pca9545>,"reg:0",
+                       <&pca9548>,"reg:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-pwm-pca9685a-overlay.dts
@@ -0,0 +1,26 @@
+// Definitions for NXP PCA9685A I2C PWM controller on ARM I2C bus.
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pca: pca@40 {
+                               compatible = "nxp,pca9685";
+                               #pwm-cells = <2>;
+                               reg = <0x40>;
+                               status = "okay";
+                       };
+               };
+       };
+       __overrides__ {
+               addr = <&pca>,"reg:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
@@ -0,0 +1,183 @@
+// Definitions for several I2C based Real Time Clocks
+// Available through i2c-gpio
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       i2c_gpio: i2c-gpio-rtc@0 {
+                               compatible = "i2c-gpio";
+                               gpios = <&gpio 23 0 /* sda */
+                                        &gpio 24 0 /* scl */
+                                       >;
+                               i2c-gpio,delay-us = <2>;        /* ~100 kHz */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       abx80x: abx80x@69 {
+                               compatible = "abracon,abx80x";
+                               reg = <0x69>;
+                               abracon,tc-diode = "standard";
+                               abracon,tc-resistor = <0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds1307: ds1307@68 {
+                               compatible = "maxim,ds1307";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds1339: ds1339@68 {
+                               compatible = "dallas,ds1339";
+                               trickle-resistor-ohms = <0>;
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds3231: ds3231@68 {
+                               compatible = "maxim,ds3231";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@5 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       mcp7940x: mcp7940x@6f {
+                               compatible = "microchip,mcp7940x";
+                               reg = <0x6f>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@6 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       mcp7941x: mcp7941x@6f {
+                               compatible = "microchip,mcp7941x";
+                               reg = <0x6f>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@7 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf2127: pcf2127@51 {
+                               compatible = "nxp,pcf2127";
+                               reg = <0x51>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@8 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf8523: pcf8523@68 {
+                               compatible = "nxp,pcf8523";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&i2c_gpio>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf8563: pcf8563@51 {
+                               compatible = "nxp,pcf8563";
+                               reg = <0x51>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       __overrides__ {
+               abx80x = <0>,"+1";
+               ds1307 = <0>,"+2";
+               ds1339 = <0>,"+3";
+               ds3231 = <0>,"+4";
+               mcp7940x = <0>,"+5";
+               mcp7941x = <0>,"+6";
+               pcf2127 = <0>,"+7";
+               pcf8523 = <0>,"+8";
+               pcf8563 = <0>,"+9";
+               trickle-diode-type = <&abx80x>,"abracon,tc-diode";
+               trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
+                                       <&abx80x>,"abracon,tc-resistor";
+               wakeup-source = <&ds1339>,"wakeup-source?",
+                               <&ds3231>,"wakeup-source?",
+                               <&mcp7940x>,"wakeup-source?",
+                                       <&mcp7941x>,"wakeup-source?";
+               i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
+               i2c_gpio_scl = <&i2c_gpio>,"gpios:16";
+               i2c_gpio_delay_us = <&i2c_gpio>,"i2c-gpio,delay-us:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
@@ -0,0 +1,181 @@
+// Definitions for several I2C based Real Time Clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       abx80x: abx80x@69 {
+                               compatible = "abracon,abx80x";
+                               reg = <0x69>;
+                               abracon,tc-diode = "standard";
+                               abracon,tc-resistor = <0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds1307: ds1307@68 {
+                               compatible = "maxim,ds1307";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds1339: ds1339@68 {
+                               compatible = "dallas,ds1339";
+                               trickle-resistor-ohms = <0>;
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds3231: ds3231@68 {
+                               compatible = "maxim,ds3231";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       mcp7940x: mcp7940x@6f {
+                               compatible = "microchip,mcp7940x";
+                               reg = <0x6f>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@5 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       mcp7941x: mcp7941x@6f {
+                               compatible = "microchip,mcp7941x";
+                               reg = <0x6f>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@6 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf2127: pcf2127@51 {
+                               compatible = "nxp,pcf2127";
+                               reg = <0x51>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@7 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf8523: pcf8523@68 {
+                               compatible = "nxp,pcf8523";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@8 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcf8563: pcf8563@51 {
+                               compatible = "nxp,pcf8563";
+                               reg = <0x51>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       m41t62: m41t62@68 {
+                               compatible = "st,m41t62";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       __overrides__ {
+               abx80x = <0>,"+0";
+               ds1307 = <0>,"+1";
+               ds1339 = <0>,"+2";
+               ds3231 = <0>,"+3";
+               mcp7940x = <0>,"+4";
+               mcp7941x = <0>,"+5";
+               pcf2127 = <0>,"+6";
+               pcf8523 = <0>,"+7";
+               pcf8563 = <0>,"+8";
+               m41t62 = <0>,"+9";
+               trickle-diode-type = <&abx80x>,"abracon,tc-diode";
+               trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
+                                       <&abx80x>,"abracon,tc-resistor";
+               wakeup-source = <&ds1339>,"wakeup-source?",
+                               <&ds3231>,"wakeup-source?",
+                               <&mcp7940x>,"wakeup-source?",
+                               <&mcp7941x>,"wakeup-source?",
+                               <&m41t62>,"wakeup-source?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
@@ -0,0 +1,223 @@
+// Definitions for I2C based sensors using the Industrial IO or HWMON interface.
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       bme280: bme280@76 {
+                               compatible = "bosch,bme280";
+                               reg = <0x76>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       bmp085: bmp085@77 {
+                               compatible = "bosch,bmp085";
+                               reg = <0x77>;
+                               default-oversampling = <3>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       bmp180: bmp180@77 {
+                               compatible = "bosch,bmp180";
+                               reg = <0x77>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       bmp280: bmp280@76 {
+                               compatible = "bosch,bmp280";
+                               reg = <0x76>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       htu21: htu21@40 {
+                               compatible = "htu21";
+                               reg = <0x40>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@5 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       lm75: lm75@4f {
+                               compatible = "lm75";
+                               reg = <0x4f>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@6 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       si7020: si7020@40 {
+                               compatible = "si7020";
+                               reg = <0x40>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@7 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       tmp102: tmp102@48 {
+                               compatible = "ti,tmp102";
+                               reg = <0x48>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@8 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       hdc100x: hdc100x@40 {
+                               compatible = "hdc100x";
+                               reg = <0x40>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       tsl4531: tsl4531@29 {
+                               compatible = "tsl4531";
+                               reg = <0x29>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@10 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       veml6070: veml6070@38 {
+                               compatible = "veml6070";
+                               reg = <0x38>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@11 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       sht3x: sht3x@44 {
+                               compatible = "sht3x";
+                               reg = <0x44>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@12 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ds1621: ds1621@48 {
+                               compatible = "ds1621";
+                               reg = <0x48>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       __overrides__ {
+               addr =  <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
+                       <&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
+                       <&ds1621>,"reg:0";
+               bme280 = <0>,"+0";
+               bmp085 = <0>,"+1";
+               bmp180 = <0>,"+2";
+               bmp280 = <0>,"+3";
+               htu21 = <0>,"+4";
+               lm75 = <0>,"+5";
+               lm75addr = <&lm75>,"reg:0";
+               si7020 = <0>,"+6";
+               tmp102 = <0>,"+7";
+               hdc100x = <0>,"+8";
+               tsl4531 = <0>,"+9";
+               veml6070 = <0>,"+10";
+               sht3x = <0>,"+11";
+               ds1621 = <0>,"+12";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c0-bcm2708-overlay.dts
@@ -0,0 +1,69 @@
+/*
+ * Device tree overlay for i2c_bcm2708, i2c0 bus
+ *
+ * Compile:
+ * dtc -@ -I dts -O dtb -o i2c0-bcm2708-overlay.dtb i2c0-bcm2708-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+/{
+   compatible = "brcm,bcm2708";
+
+   fragment@0 {
+      target = <&i2c0>;
+      __overlay__ {
+         status = "okay";
+      };
+   };
+
+   fragment@1 {
+      target = <&i2c0_pins>;
+      frag1: __overlay__ {
+         brcm,pins = <0 1>;
+         brcm,function = <4>; /* alt0 */
+      };
+   };
+
+   fragment@2 {
+      target = <&i2c0_pins>;
+      __dormant__ {
+         brcm,pins = <28 29>;
+         brcm,function = <4>; /* alt0 */
+      };
+   };
+
+   fragment@3 {
+      target = <&i2c0_pins>;
+      __dormant__ {
+         brcm,pins = <44 45>;
+         brcm,function = <5>; /* alt1 */
+      };
+   };
+
+   fragment@4 {
+      target = <&i2c0_pins>;
+      __dormant__ {
+         brcm,pins = <46 47>;
+         brcm,function = <4>; /* alt0 */
+      };
+   };
+
+   fragment@5 {
+      target = <&i2c0>;
+      __dormant__ {
+         compatible = "brcm,bcm2708-i2c";
+      };
+   };
+
+   __overrides__ {
+      sda0_pin = <&frag1>,"brcm,pins:0";
+      scl0_pin = <&frag1>,"brcm,pins:4";
+      pins_0_1   = <0>,"+1-2-3-4";
+      pins_28_29 = <0>,"-1+2-3-4";
+      pins_44_45 = <0>,"-1-2+3-4";
+      pins_46_47 = <0>,"-1-2-3+4";
+      combine = <0>, "!5";
+   };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2c1-bcm2708-overlay.dts
@@ -0,0 +1,43 @@
+/*
+ * Device tree overlay for i2c_bcm2708, i2c1 bus
+ *
+ * Compile:
+ * dtc -@ -I dts -O dtb -o i2c1-bcm2708-overlay.dtb i2c1-bcm2708-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+/{
+   compatible = "brcm,bcm2708";
+
+   fragment@0 {
+      target = <&i2c1>;
+      __overlay__ {
+         pinctrl-0 = <&i2c1_pins>;
+         status = "okay";
+      };
+   };
+
+   fragment@1 {
+      target = <&i2c1_pins>;
+         pins: __overlay__ {
+         brcm,pins = <2 3>;
+         brcm,function = <4>; /* alt 0 */
+      };
+   };
+
+   fragment@2 {
+      target = <&i2c1>;
+      __dormant__ {
+         compatible = "brcm,bcm2708-i2c";
+      };
+   };
+
+   __overrides__ {
+      sda1_pin = <&pins>,"brcm,pins:0";
+      scl1_pin = <&pins>,"brcm,pins:4";
+      pin_func = <&pins>,"brcm,function:0";
+      combine = <0>, "!2";
+   };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay to move i2s to gpio 28 to 31 on CM
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&i2s_pins>;
+               __overlay__ {
+                       brcm,pins = <28 29 30 31>;
+                       brcm,function = <6>; /* alt2 */
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts
@@ -0,0 +1,46 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4c>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               frag2: __overlay__ {
+                       compatible = "iqaudio,iqaudio-dac";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&frag2>,"iqaudio,24db_digital_gain?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts
@@ -0,0 +1,49 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4c {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4c>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               iqaudio_dac: __overlay__ {
+                       compatible = "iqaudio,iqaudio-dac";
+                       i2s-controller = <&i2s>;
+                       mute-gpios = <&gpio 22 0>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&iqaudio_dac>,"iqaudio,24db_digital_gain?";
+               auto_mute_amp = <&iqaudio_dac>,"iqaudio-dac,auto-mute-amp?";
+               unmute_amp = <&iqaudio_dac>,"iqaudio-dac,unmute-amp?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
@@ -0,0 +1,47 @@
+// Definitions for IQAudIO Digi WM8804 audio board
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               status = "okay";
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               PVDD-supply = <&vdd_3v3_reg>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               wm8804_digi: __overlay__ {
+                       compatible = "iqaudio,wm8804-digi";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               card_name = <&wm8804_digi>,"wm8804-digi,card-name";
+               dai_name = <&wm8804_digi>,"wm8804-digi,dai-name";
+               dai_stream_name = <&wm8804_digi>,"wm8804-digi,dai-stream-name";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/jedec-spi-nor-overlay.dts
@@ -0,0 +1,309 @@
+// Overlay for JEDEC SPI-NOR Flash Devices (aka m25p80)
+
+// dtparams:
+//     flash-spi<n>-<m>        - Enables flash device on SPI<n>, CS#<m>.
+//     flash-fastr-spi<n>-<m>  - Enables flash device with fast read capability on SPI<n>, CS#<m>.
+//
+// If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+//
+// Example: A single flash device with fast read capability on SPI0, CS#0:
+// dtoverlay=jedec-spi-nor:flash-fastr-spi0-0
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       // disable spi-dev on spi0.0
+       fragment@0 {
+               target = <&spidev0>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi0.1
+       fragment@1 {
+               target = <&spidev1>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.0
+       fragment@2 {
+               target-path = "spi1/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.1
+       fragment@3 {
+               target-path = "spi1/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.2
+       fragment@4 {
+               target-path = "spi1/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.0
+       fragment@5 {
+               target-path = "spi2/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.1
+       fragment@6 {
+               target-path = "spi2/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.2
+       fragment@7 {
+               target-path = "spi2/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // enable flash on spi0.0
+       fragment@8 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_00: spi_nor@0 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi0.1
+       fragment@9 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_01: spi_nor@1 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi1.0
+       fragment@10 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_10: spi_nor@0 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi1.1
+       fragment@11 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_11: spi_nor@1 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi1.2
+       fragment@12 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_12: spi_nor@2 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi2.0
+       fragment@13 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_20: spi_nor@0 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi2.1
+       fragment@14 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_21: spi_nor@1 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // enable flash on spi2.2
+       fragment@15 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       spi_nor_22: spi_nor@2 {
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               compatible = "jedec,spi-nor";
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                       };
+               };
+       };
+
+       // Enable fast read for device on spi0.0.
+       // Use default active low interrupt signalling.
+       fragment@16 {
+               target = <&spi_nor_00>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi0.1.
+       // Use default active low interrupt signalling.
+       fragment@17 {
+               target = <&spi_nor_01>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi1.0.
+       // Use default active low interrupt signalling.
+       fragment@18 {
+               target = <&spi_nor_10>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi1.1.
+       // Use default active low interrupt signalling.
+       fragment@19 {
+               target = <&spi_nor_11>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi1.2.
+       // Use default active low interrupt signalling.
+       fragment@20 {
+               target = <&spi_nor_12>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi2.0.
+       // Use default active low interrupt signalling.
+       fragment@21 {
+               target = <&spi_nor_20>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi2.1.
+       // Use default active low interrupt signalling.
+       fragment@22 {
+               target = <&spi_nor_21>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       // Enable fast read for device on spi2.2.
+       // Use default active low interrupt signalling.
+       fragment@23 {
+               target = <&spi_nor_22>;
+               __dormant__ {
+                       m25p,fast-read;
+               };
+       };
+
+       __overrides__ {
+               flash-spi0-0       = <0>,"+0+8";
+               flash-spi0-1       = <0>,"+1+9";
+               flash-spi1-0       = <0>,"+2+10";
+               flash-spi1-1       = <0>,"+3+11";
+               flash-spi1-2       = <0>,"+4+12";
+               flash-spi2-0       = <0>,"+5+13";
+               flash-spi2-1       = <0>,"+6+14";
+               flash-spi2-2       = <0>,"+7+15";
+               flash-fastr-spi0-0 = <0>,"+0+8+16";
+               flash-fastr-spi0-1 = <0>,"+1+9+17";
+               flash-fastr-spi1-0 = <0>,"+2+10+18";
+               flash-fastr-spi1-1 = <0>,"+3+11+19";
+               flash-fastr-spi1-2 = <0>,"+4+12+20";
+               flash-fastr-spi2-0 = <0>,"+5+13+21";
+               flash-fastr-spi2-1 = <0>,"+6+14+22";
+               flash-fastr-spi2-2 = <0>,"+7+15+23";
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/justboom-dac-overlay.dts
@@ -0,0 +1,46 @@
+// Definitions for JustBoom DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       pcm5122@4d {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5122";
+                               reg = <0x4d>;
+                               AVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               frag2: __overlay__ {
+                       compatible = "justboom,justboom-dac";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               24db_digital_gain = <&frag2>,"justboom,24db_digital_gain?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/justboom-digi-overlay.dts
@@ -0,0 +1,41 @@
+// Definitions for JustBoom Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "justboom,justboom-digi";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts
@@ -0,0 +1,57 @@
+// Definitions for lirc-rpi module
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       lirc_rpi: lirc_rpi {
+                               compatible = "rpi,lirc-rpi";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&lirc_pins>;
+                               status = "okay";
+
+                               // Override autodetection of IR receiver circuit
+                               // (0 = active high, 1 = active low, -1 = no override )
+                               rpi,sense = <0xffffffff>;
+
+                               // Software carrier
+                               // (0 = off, 1 = on)
+                               rpi,softcarrier = <1>;
+
+                               // Invert output
+                               // (0 = off, 1 = on)
+                               rpi,invert = <0>;
+
+                               // Enable debugging messages
+                               // (0 = off, 1 = on)
+                               rpi,debug = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       lirc_pins: lirc_pins {
+                               brcm,pins = <17 18>;
+                               brcm,function = <1 0>; // out in
+                               brcm,pull = <0 1>; // off down
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
+               gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
+               gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
+
+               sense =         <&lirc_rpi>,"rpi,sense:0";
+               softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
+               invert =        <&lirc_rpi>,"rpi,invert:0";
+               debug =         <&lirc_rpi>,"rpi,debug:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ltc294x-overlay.dts
@@ -0,0 +1,86 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ltc2941: ltc2941@64 {
+                               compatible = "lltc,ltc2941";
+                               reg = <0x64>;
+                               lltc,resistor-sense = <50>;
+                               lltc,prescaler-exponent = <7>; 
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ltc2942: ltc2942@64 {
+                               compatible = "lltc,ltc2942";
+                               reg = <0x64>;
+                               lltc,resistor-sense = <50>;
+                               lltc,prescaler-exponent = <7>; 
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ltc2943: ltc2943@64 {
+                               compatible = "lltc,ltc2943";
+                               reg = <0x64>;
+                               lltc,resistor-sense = <50>;
+                               lltc,prescaler-exponent = <7>; 
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&i2c_arm>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       ltc2944: ltc2944@64 {
+                               compatible = "lltc,ltc2944";
+                               reg = <0x64>;
+                               lltc,resistor-sense = <50>;
+                               lltc,prescaler-exponent = <7>; 
+                       };
+               };
+       };
+
+       __overrides__ {
+               ltc2941 = <0>,"+0";
+               ltc2942 = <0>,"+1";
+               ltc2943 = <0>,"+2";
+               ltc2944 = <0>,"+3";
+               resistor-sense = <&ltc2941>, "lltc,resistor-sense:0",
+                                <&ltc2942>, "lltc,resistor-sense:0",
+                                <&ltc2943>, "lltc,resistor-sense:0",
+                                <&ltc2944>, "lltc,resistor-sense:0";
+               prescaler-exponent = <&ltc2941>, "lltc,prescaler-exponent:0",
+                                <&ltc2942>, "lltc,prescaler-exponent:0",
+                                <&ltc2943>, "lltc,prescaler-exponent:0",
+                                <&ltc2944>, "lltc,prescaler-exponent:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mbed-dac-overlay.dts
@@ -0,0 +1,64 @@
+// Definitions for mbed DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                        #size-cells = <0>;
+                       status = "okay";
+
+                       tlv320aic23: codec@1a {
+                               #sound-dai-cells = <0>;
+                               reg = <0x1a>;
+                               compatible = "ti,tlv320aic23";
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "simple-audio-card";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+
+                       simple-audio-card,name = "mbed-DAC";
+
+                       simple-audio-card,widgets =
+                               "Microphone", "Mic Jack",
+                               "Line", "Line In",
+                               "Headphone", "Headphone Jack";
+
+                       simple-audio-card,routing =
+                               "Headphone Jack", "LHPOUT",
+                               "Headphone Jack", "RHPOUT",
+                               "LLINEIN", "Line In",
+                               "RLINEIN", "Line In",
+                               "MICIN", "Mic Jack";
+
+                       simple-audio-card,format = "i2s";
+
+                       simple-audio-card,cpu {
+                               sound-dai = <&i2s>;
+                       };
+
+                       sound_master: simple-audio-card,codec {
+                               sound-dai = <&tlv320aic23>;
+                               system-clock-frequency = <12288000>;
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
@@ -0,0 +1,54 @@
+// Definitions for MCP23017 Gpio Extender from Microchip Semiconductor
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&i2c1>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       mcp23017_pins: mcp23017_pins {
+                               brcm,pins = <4>;
+                               brcm,function = <0>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp23017: mcp@20 {
+                               compatible = "microchip,mcp23017";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells=<2>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <4 2>;
+                               interrupt-controller;
+                               microchip,irq-mirror;
+
+                               status = "okay";
+                       };
+               };
+       };
+       
+       __overrides__ {
+               gpiopin = <&mcp23017_pins>,"brcm,pins:0",
+                               <&mcp23017>,"interrupts:0";
+               addr = <&mcp23017>,"reg:0";
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp23s17-overlay.dts
@@ -0,0 +1,732 @@
+// Overlay for MCP23S08/17 GPIO Extenders from Microchip Semiconductor
+
+// dtparams:
+//     s08-spi<n>-<m>-present  - 4-bit integer, bitmap indicating MCP23S08 devices present on SPI<n>, CS#<m>.
+//     s17-spi<n>-<m>-present  - 8-bit integer, bitmap indicating MCP23S17 devices present on SPI<n>, CS#<m>.
+//     s08-spi<n>-<m>-int-gpio - integer, enables interrupts on a single MCP23S08 device on SPI<n>, CS#<m>, specifies the GPIO pin to which INT output is connected.
+//     s17-spi<n>-<m>-int-gpio - integer, enables mirrored interrupts on a single MCP23S17 device on SPI<n>, CS#<m>, specifies the GPIO pin to which either INTA or INTB output is connected.
+//
+// If devices are present on SPI1 or SPI2, those interfaces must be enabled with one of the spi1-1/2/3cs and/or spi2-1/2/3cs overlays.
+// If interrupts are enabled for a device on a given CS# on a SPI bus, that device must be the only one present on that SPI bus/CS#.
+//
+// Example 1: A single MCP23S17 device on SPI0, CS#0 with its SPI addr set to 0 and INTA output connected to GPIO25:
+// dtoverlay=mcp23s17:s17-spi0-0-present=1,s17-spi0-0-int-gpio=25
+//
+// Example 2: Two MCP23S08 devices on SPI1, CS#0 with their addrs set to 2 and 3. Three MCP23S17 devices on SPI1, CS#1 with their addrs set to 0, 1 and 7:
+// dtoverlay=spi1-2cs
+// dtoverlay=mcp23s17:s08-spi1-0-present=12,s17-spi1-1-present=131
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       // disable spi-dev on spi0.0
+       fragment@0 {
+               target = <&spidev0>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi0.1
+       fragment@1 {
+               target = <&spidev1>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.0
+       fragment@2 {
+               target-path = "spi1/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.1
+       fragment@3 {
+               target-path = "spi1/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi1.2
+       fragment@4 {
+               target-path = "spi1/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.0
+       fragment@5 {
+               target-path = "spi2/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.1
+       fragment@6 {
+               target-path = "spi2/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // disable spi-dev on spi2.2
+       fragment@7 {
+               target-path = "spi2/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       // enable one or more mcp23s08s on spi0.0
+       fragment@8 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_00: mcp23s08@0 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi0-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi0-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi0.1
+       fragment@9 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_01: mcp23s08@1 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi0-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi0-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi1.0
+       fragment@10 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_10: mcp23s08@0 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi1.1
+       fragment@11 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_11: mcp23s08@1 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi1.2
+       fragment@12 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_12: mcp23s08@2 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi1-2-present parameter */
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi1-2-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi2.0
+       fragment@13 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_20: mcp23s08@0 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi2.1
+       fragment@14 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_21: mcp23s08@1 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s08s on spi2.2
+       fragment@15 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s08_22: mcp23s08@2 {
+                               compatible = "microchip,mcp23s08";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s08-spi2-2-present parameter */
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s08-spi2-2-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi0.0
+       fragment@16 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_00: mcp23s17@0 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi0-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi0-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi0.1
+       fragment@17 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_01: mcp23s17@1 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi0-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi0-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi1.0
+       fragment@18 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_10: mcp23s17@0 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi1.1
+       fragment@19 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_11: mcp23s17@1 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi1.2
+       fragment@20 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_12: mcp23s17@2 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi1-2-present parameter */
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi1-2-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi2.0
+       fragment@21 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_20: mcp23s17@0 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-0-present parameter */
+                               reg = <0>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-0-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi2.1
+       fragment@22 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_21: mcp23s17@1 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-1-present parameter */
+                               reg = <1>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-1-int-gpio parameter */
+                       };
+               };
+       };
+
+       // enable one or more mcp23s17s on spi2.2
+       fragment@23 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                       mcp23s17_22: mcp23s17@2 {
+                               compatible = "microchip,mcp23s17";
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               microchip,spi-present-mask = <0x00>;  /* overwritten by mcp23s17-spi2-2-present parameter */
+                               reg = <2>;
+                               spi-max-frequency = <500000>;
+                               status = "okay";
+                               #interrupt-cells=<2>;
+                               interrupts = <0 2>;  /* 1st word overwritten by mcp23s17-spi2-2-int-gpio parameter */
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi0.0 as a input with no pull-up/down
+       fragment@24 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi0_0_int_pins: spi0_0_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi0-0-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi0.1 as a input with no pull-up/down
+       fragment@25 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi0_1_int_pins: spi0_1_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi0-1-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.0 as a input with no pull-up/down
+       fragment@26 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi1_0_int_pins: spi1_0_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-0-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.1 as a input with no pull-up/down
+       fragment@27 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi1_1_int_pins: spi1_1_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-1-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi1.2 as a input with no pull-up/down
+       fragment@28 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi1_2_int_pins: spi1_2_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi1-2-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.0 as a input with no pull-up/down
+       fragment@29 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi2_0_int_pins: spi2_0_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-0-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.1 as a input with no pull-up/down
+       fragment@30 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi2_1_int_pins: spi2_1_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-1-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to INT(A/B) output of mcp23s08/17 on spi2.2 as a input with no pull-up/down
+       fragment@31 {
+               target = <&gpio>;
+               __dormant__ {
+                       spi2_2_int_pins: spi2_2_int_pins {
+                               brcm,pins = <0>;  /* overwritten by mcp23s08/17-spi2-2-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi0.0.
+       // Use default active low interrupt signalling.
+       fragment@32 {
+               target = <&mcp23s08_00>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi0.1.
+       // Use default active low interrupt signalling.
+       fragment@33 {
+               target = <&mcp23s08_01>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi1.0.
+       // Use default active low interrupt signalling.
+       fragment@34 {
+               target = <&mcp23s08_10>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi1.1.
+       // Use default active low interrupt signalling.
+       fragment@35 {
+               target = <&mcp23s08_11>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi1.2.
+       // Use default active low interrupt signalling.
+       fragment@36 {
+               target = <&mcp23s08_12>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi2.0.
+       // Use default active low interrupt signalling.
+       fragment@37 {
+               target = <&mcp23s08_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi2.1.
+       // Use default active low interrupt signalling.
+       fragment@38 {
+               target = <&mcp23s08_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s08 on spi2.2.
+       // Use default active low interrupt signalling.
+       fragment@39 {
+               target = <&mcp23s08_22>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi0.0.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Use default active low interrupt signalling.
+       fragment@40 {
+               target = <&mcp23s17_00>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi0.1.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@41 {
+               target = <&mcp23s17_01>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi1.0.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@42 {
+               target = <&mcp23s17_10>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi1.1.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@43 {
+               target = <&mcp23s17_11>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi1.2.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@44 {
+               target = <&mcp23s17_12>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi2.0.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@45 {
+               target = <&mcp23s17_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi2.1.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@46 {
+               target = <&mcp23s17_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       // Enable interrupts for a mcp23s17 on spi2.2.
+       // Enable mirroring so that either INTA or INTB output of mcp23s17 can be connected to the GPIO pin.
+       // Configure INTA/B outputs of mcp23s08/17 as active low.
+       fragment@47 {
+               target = <&mcp23s17_22>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       microchip,irq-mirror;
+               };
+       };
+
+       __overrides__ {
+               s08-spi0-0-present = <0>,"+0+8",  <&mcp23s08_00>,"microchip,spi-present-mask:0";
+               s08-spi0-1-present = <0>,"+1+9",  <&mcp23s08_01>,"microchip,spi-present-mask:0";
+               s08-spi1-0-present = <0>,"+2+10", <&mcp23s08_10>,"microchip,spi-present-mask:0";
+               s08-spi1-1-present = <0>,"+3+11", <&mcp23s08_11>,"microchip,spi-present-mask:0";
+               s08-spi1-2-present = <0>,"+4+12", <&mcp23s08_12>,"microchip,spi-present-mask:0";
+               s08-spi2-0-present = <0>,"+5+13", <&mcp23s08_20>,"microchip,spi-present-mask:0";
+               s08-spi2-1-present = <0>,"+6+14", <&mcp23s08_21>,"microchip,spi-present-mask:0";
+               s08-spi2-2-present = <0>,"+7+15", <&mcp23s08_22>,"microchip,spi-present-mask:0";
+               s17-spi0-0-present = <0>,"+0+16", <&mcp23s17_00>,"microchip,spi-present-mask:0";
+               s17-spi0-1-present = <0>,"+1+17", <&mcp23s17_01>,"microchip,spi-present-mask:0";
+               s17-spi1-0-present = <0>,"+2+18", <&mcp23s17_10>,"microchip,spi-present-mask:0";
+               s17-spi1-1-present = <0>,"+3+19", <&mcp23s17_11>,"microchip,spi-present-mask:0";
+               s17-spi1-2-present = <0>,"+4+20", <&mcp23s17_12>,"microchip,spi-present-mask:0";
+               s17-spi2-0-present = <0>,"+5+21", <&mcp23s17_20>,"microchip,spi-present-mask:0";
+               s17-spi2-1-present = <0>,"+6+22", <&mcp23s17_21>,"microchip,spi-present-mask:0";
+               s17-spi2-2-present = <0>,"+7+23", <&mcp23s17_22>,"microchip,spi-present-mask:0";
+               s08-spi0-0-int-gpio = <0>,"+24+32", <&spi0_0_int_pins>,"brcm,pins:0", <&mcp23s08_00>,"interrupts:0";
+               s08-spi0-1-int-gpio = <0>,"+25+33", <&spi0_1_int_pins>,"brcm,pins:0", <&mcp23s08_01>,"interrupts:0";
+               s08-spi1-0-int-gpio = <0>,"+26+34", <&spi1_0_int_pins>,"brcm,pins:0", <&mcp23s08_10>,"interrupts:0";
+               s08-spi1-1-int-gpio = <0>,"+27+35", <&spi1_1_int_pins>,"brcm,pins:0", <&mcp23s08_11>,"interrupts:0";
+               s08-spi1-2-int-gpio = <0>,"+28+36", <&spi1_2_int_pins>,"brcm,pins:0", <&mcp23s08_12>,"interrupts:0";
+               s08-spi2-0-int-gpio = <0>,"+29+37", <&spi2_0_int_pins>,"brcm,pins:0", <&mcp23s08_20>,"interrupts:0";
+               s08-spi2-1-int-gpio = <0>,"+30+38", <&spi2_1_int_pins>,"brcm,pins:0", <&mcp23s08_21>,"interrupts:0";
+               s08-spi2-2-int-gpio = <0>,"+31+39", <&spi2_2_int_pins>,"brcm,pins:0", <&mcp23s08_22>,"interrupts:0";
+               s17-spi0-0-int-gpio = <0>,"+24+40", <&spi0_0_int_pins>,"brcm,pins:0", <&mcp23s17_00>,"interrupts:0";
+               s17-spi0-1-int-gpio = <0>,"+25+41", <&spi0_1_int_pins>,"brcm,pins:0", <&mcp23s17_01>,"interrupts:0";
+               s17-spi1-0-int-gpio = <0>,"+26+42", <&spi1_0_int_pins>,"brcm,pins:0", <&mcp23s17_10>,"interrupts:0";
+               s17-spi1-1-int-gpio = <0>,"+27+43", <&spi1_1_int_pins>,"brcm,pins:0", <&mcp23s17_11>,"interrupts:0";
+               s17-spi1-2-int-gpio = <0>,"+28+44", <&spi1_2_int_pins>,"brcm,pins:0", <&mcp23s17_12>,"interrupts:0";
+               s17-spi2-0-int-gpio = <0>,"+29+45", <&spi2_0_int_pins>,"brcm,pins:0", <&mcp23s17_20>,"interrupts:0";
+               s17-spi2-1-int-gpio = <0>,"+30+46", <&spi2_1_int_pins>,"brcm,pins:0", <&mcp23s17_21>,"interrupts:0";
+               s17-spi2-2-int-gpio = <0>,"+31+47", <&spi2_2_int_pins>,"brcm,pins:0", <&mcp23s17_22>,"interrupts:0";
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts
@@ -0,0 +1,73 @@
+/*
+ * Device tree overlay for mcp251x/can0 on spi0.0
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.0 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+        };
+    };
+
+    fragment@1 {
+       target = <&spidev0>;
+       __overlay__ {
+           status = "disabled";
+       };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@2 {
+        target = <&gpio>;
+        __overlay__ {
+            can0_pins: can0_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@3 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on SPI0.0 */
+            can0_osc: can0_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@4 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can0: mcp2515@0 {
+                reg = <0>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can0_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 8>; /* IRQ_TYPE_LEVEL_LOW */
+                clocks = <&can0_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can0_osc>,"clock-frequency:0";
+        spimaxfrequency = <&can0>,"spi-max-frequency:0";
+        interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0";
+    };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts
@@ -0,0 +1,73 @@
+/*
+ * Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.1 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+        };
+    };
+
+    fragment@1 {
+       target = <&spidev1>;
+       __overlay__ {
+           status = "disabled";
+       };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@2 {
+        target = <&gpio>;
+        __overlay__ {
+            can1_pins: can1_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@3 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on spi0.1 */
+            can1_osc: can1_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@4 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can1: mcp2515@1 {
+                reg = <1>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can1_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 8>; /* IRQ_TYPE_LEVEL_LOW */
+                clocks = <&can1_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can1_osc>,"clock-frequency:0";
+        spimaxfrequency = <&can1>,"spi-max-frequency:0";
+        interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0";
+    };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp3008-overlay.dts
@@ -0,0 +1,205 @@
+/*
+ * Device tree overlay for Microchip mcp3008 10-Bit A/D Converters
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spidev0>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev1>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target-path = "spi1/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target-path = "spi1/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@4 {
+               target-path = "spi1/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@5 {
+               target-path = "spi2/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@6 {
+               target-path = "spi2/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@7 {
+               target-path = "spi2/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@8 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_00: mcp3008@0 {
+                               compatible = "mcp3008";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_01: mcp3008@1 {
+                               compatible = "mcp3008";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@10 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_10: mcp3008@0 {
+                               compatible = "mcp3008";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@11 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_11: mcp3008@1 {
+                               compatible = "mcp3008";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@12 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_12: mcp3008@2 {
+                               compatible = "mcp3008";
+                               reg = <2>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@13 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_20: mcp3008@0 {
+                               compatible = "mcp3008";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@14 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_21: mcp3008@1 {
+                               compatible = "mcp3008";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@15 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3008_22: mcp3008@2 {
+                               compatible = "mcp3008";
+                               reg = <2>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               spi0-0-present = <0>, "+0+8";
+               spi0-1-present = <0>, "+1+9";
+               spi1-0-present = <0>, "+2+10";
+               spi1-1-present = <0>, "+3+11";
+               spi1-2-present = <0>, "+4+12";
+               spi2-0-present = <0>, "+5+13";
+               spi2-1-present = <0>, "+6+14";
+               spi2-2-present = <0>, "+7+15";
+               spi0-0-speed = <&mcp3008_00>, "spi-max-frequency:0";
+               spi0-1-speed = <&mcp3008_01>, "spi-max-frequency:0";
+               spi1-0-speed = <&mcp3008_10>, "spi-max-frequency:0";
+               spi1-1-speed = <&mcp3008_11>, "spi-max-frequency:0";
+               spi1-2-speed = <&mcp3008_12>, "spi-max-frequency:0";
+               spi2-0-speed = <&mcp3008_20>, "spi-max-frequency:0";
+               spi2-1-speed = <&mcp3008_21>, "spi-max-frequency:0";
+               spi2-2-speed = <&mcp3008_22>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mcp3202-overlay.dts
@@ -0,0 +1,205 @@
+/*
+ * Device tree overlay for Microchip mcp3202 12-Bit A/D Converters
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spidev0>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev1>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target-path = "spi1/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target-path = "spi1/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@4 {
+               target-path = "spi1/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@5 {
+               target-path = "spi2/spidev@0";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@6 {
+               target-path = "spi2/spidev@1";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@7 {
+               target-path = "spi2/spidev@2";
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@8 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_00: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@9 {
+               target = <&spi0>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_01: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@10 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_10: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@11 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_11: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@12 {
+               target = <&spi1>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_12: mcp3202@2 {
+                               compatible = "mcp3202";
+                               reg = <2>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@13 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_20: mcp3202@0 {
+                               compatible = "mcp3202";
+                               reg = <0>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@14 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_21: mcp3202@1 {
+                               compatible = "mcp3202";
+                               reg = <1>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       fragment@15 {
+               target = <&spi2>;
+               __dormant__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mcp3202_22: mcp3202@2 {
+                               compatible = "mcp3202";
+                               reg = <2>;
+                               spi-max-frequency = <1600000>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               spi0-0-present = <0>, "+0+8";
+               spi0-1-present = <0>, "+1+9";
+               spi1-0-present = <0>, "+2+10";
+               spi1-1-present = <0>, "+3+11";
+               spi1-2-present = <0>, "+4+12";
+               spi2-0-present = <0>, "+5+13";
+               spi2-1-present = <0>, "+6+14";
+               spi2-2-present = <0>, "+7+15";
+               spi0-0-speed = <&mcp3202_00>, "spi-max-frequency:0";
+               spi0-1-speed = <&mcp3202_01>, "spi-max-frequency:0";
+               spi1-0-speed = <&mcp3202_10>, "spi-max-frequency:0";
+               spi1-1-speed = <&mcp3202_11>, "spi-max-frequency:0";
+               spi1-2-speed = <&mcp3202_12>, "spi-max-frequency:0";
+               spi2-0-speed = <&mcp3202_20>, "spi-max-frequency:0";
+               spi2-1-speed = <&mcp3202_21>, "spi-max-frequency:0";
+               spi2-2-speed = <&mcp3202_22>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/media-center-overlay.dts
@@ -0,0 +1,134 @@
+/*
+ * Device Tree overlay for Media Center HAT by Pi Supply
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+
+                       spidev@0{
+                               status = "disabled";
+                       };
+
+                       spidev@1{
+                               status = "disabled";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       rpi_display_pins: rpi_display_pins {
+                               brcm,pins = <12 23 24 25>;
+                               brcm,function = <1 1 1 0>; /* out out out in */
+                               brcm,pull = <0 0 0 2>; /* - - - up */
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       rpidisplay: rpi-display@0{
+                               compatible = "ilitek,ili9341";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&rpi_display_pins>;
+
+                               spi-max-frequency = <32000000>;
+                               rotate = <90>;
+                               bgr;
+                               fps = <30>;
+                               buswidth = <8>;
+                               reset-gpios = <&gpio 23 0>;
+                               dc-gpios = <&gpio 24 0>;
+                               led-gpios = <&gpio 12 1>;
+                               debug = <0>;
+                       };
+
+                       rpidisplay_ts: rpi-display-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <25 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 25 0>;
+                               ti,x-plate-ohms = /bits/ 16 <60>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target-path = "/";
+               __overlay__ {
+                       lirc_rpi: lirc_rpi {
+                               compatible = "rpi,lirc-rpi";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&lirc_pins>;
+                               status = "okay";
+
+                               // Override autodetection of IR receiver circuit
+                               // (0 = active high, 1 = active low, -1 = no override )
+                               rpi,sense = <0xffffffff>;
+
+                               // Software carrier
+                               // (0 = off, 1 = on)
+                               rpi,softcarrier = <1>;
+
+                               // Invert output
+                               // (0 = off, 1 = on)
+                               rpi,invert = <0>;
+
+                               // Enable debugging messages
+                               // (0 = off, 1 = on)
+                               rpi,debug = <0>;
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&gpio>;
+               __overlay__ {
+                       lirc_pins: lirc_pins {
+                               brcm,pins = <6 5>;
+                               brcm,function = <1 0>; // out in
+                               brcm,pull = <0 1>; // off down
+                       };
+               };
+       };
+
+       __overrides__ {
+               speed =     <&rpidisplay>,"spi-max-frequency:0";
+               rotate =    <&rpidisplay>,"rotate:0";
+               fps =       <&rpidisplay>,"fps:0";
+               debug =     <&rpidisplay>,"debug:0", 
+                           <&lirc_rpi>,"rpi,debug:0";
+               xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+               swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
+               backlight = <&rpidisplay>,"led-gpios:4",
+                           <&rpi_display_pins>,"brcm,pins:0";
+
+               gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
+               gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
+               gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
+
+               sense =         <&lirc_rpi>,"rpi,sense:0";
+               softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
+               invert =        <&lirc_rpi>,"rpi,invert:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/midi-uart0-overlay.dts
@@ -0,0 +1,36 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/bcm2835.h>
+
+/*
+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
+ * baudrate. The real clock is 48MHz, which we scale so that requesting
+ * 38.4kHz results in an actual 31.25kHz.
+ *
+ *   48000000*38400/31250 = 58982400
+ */
+
+/{
+       compatible = "brcm,bcm2835";
+
+       fragment@0 {
+               target-path = "/clocks";
+               __overlay__ {
+                       midi_clk: midi_clk {
+                               compatible = "fixed-clock";
+                               #clock-cells = <0>;
+                               clock-output-names = "uart0_pclk";
+                               clock-frequency = <58982400>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&uart0>;
+               __overlay__ {
+                       clocks = <&midi_clk>,
+                                <&clocks BCM2835_CLOCK_VPU>;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/midi-uart1-overlay.dts
@@ -0,0 +1,43 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/bcm2835-aux.h>
+
+/*
+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
+ * baudrate. The real clock is 48MHz, which we scale so that requesting
+ * 38.4kHz results in an actual 31.25kHz.
+ *
+ *   48000000*38400/31250 = 58982400
+ */
+
+/{
+       compatible = "brcm,bcm2835";
+
+       fragment@0 {
+               target-path = "/clocks";
+               __overlay__ {
+                       midi_clk: clock@5 {
+                               compatible = "fixed-factor-clock";
+                               #clock-cells = <0>;
+                               clocks = <&aux BCM2835_AUX_CLOCK_UART>;
+                               clock-mult = <38400>;
+                               clock-div  = <31250>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&uart1>;
+               __overlay__ {
+                       clocks = <&midi_clk>;
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       clock-output-names = "aux_uart", "aux_spi1", "aux_spi2";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mmc-overlay.dts
@@ -0,0 +1,39 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&mmc>;
+               frag0: __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&mmc_pins>;
+                       bus-width = <4>;
+                       brcm,overclock-50 = <0>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       mmc_pins: mmc_pins {
+                               brcm,pins = <48 49 50 51 52 53>;
+                               brcm,function = <7>; /* alt3 */
+                               brcm,pull = <0 2 2 2 2 2>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sdhost>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       __overrides__ {
+               overclock_50     = <&frag0>,"brcm,overclock-50:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mpu6050-overlay.dts
@@ -0,0 +1,28 @@
+// Definitions for MPU6050
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target = <&i2c1>;
+                __overlay__ {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        status = "okay";
+                        clock-frequency = <400000>;
+
+                        mpu6050: mpu6050@68 {
+                                compatible = "invensense,mpu6050";
+                                reg = <0x68>;
+                                interrupt-parent = <&gpio>;
+                                interrupts = <4 1>;
+                        };
+                };
+        };
+
+        __overrides__ {
+                interrupt = <&mpu6050>,"interrupts:0";
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/mz61581-overlay.dts
@@ -0,0 +1,117 @@
+/*
+ * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       mz61581_pins: mz61581_pins {
+                               brcm,pins = <4 15 18 25>;
+                               brcm,function = <0 1 1 1>; /* in out out out */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       mz61581: mz61581@0{
+                               compatible = "samsung,s6d02a1";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&mz61581_pins>;
+
+                               spi-max-frequency = <128000000>;
+                               spi-cpol;
+                               spi-cpha;
+
+                               width = <320>;
+                               height = <480>;
+                               rotate = <270>;
+                               bgr;
+                               fps = <30>;
+                               buswidth = <8>;
+                               txbuflen = <32768>;
+
+                               reset-gpios = <&gpio 15 0>;
+                               dc-gpios = <&gpio 25 0>;
+                               led-gpios = <&gpio 18 0>;
+
+                               init = <0x10000b0 00
+                                       0x1000011
+                                       0x20000ff
+                                       0x10000b3 0x02 0x00 0x00 0x00
+                                       0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43
+                                       0x10000c1 0x08 0x16 0x08 0x08
+                                       0x10000c4 0x11 0x07 0x03 0x03
+                                       0x10000c6 0x00
+                                       0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00
+                                       0x1000035 0x00
+                                       0x1000036 0xa0
+                                       0x100003a 0x55
+                                       0x1000044 0x00 0x01
+                                       0x10000d0 0x07 0x07 0x1d 0x03
+                                       0x10000d1 0x03 0x30 0x10
+                                       0x10000d2 0x03 0x14 0x04
+                                       0x1000029
+                                       0x100002c>;
+
+                               /* This is a workaround to make sure the init sequence slows down and doesn't fail */
+                               debug = <3>;
+                       };
+
+                       mz61581_ts: mz61581_ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <4 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 4 0>;
+
+                               ti,x-plate-ohms = /bits/ 16 <60>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =   <&mz61581>, "spi-max-frequency:0";
+               rotate =  <&mz61581>, "rotate:0";
+               fps =     <&mz61581>, "fps:0";
+               txbuflen = <&mz61581>, "txbuflen:0";
+               debug =   <&mz61581>, "debug:0";
+               xohms =   <&mz61581_ts>,"ti,x-plate-ohms;0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/papirus-overlay.dts
@@ -0,0 +1,89 @@
+/* PaPiRus ePaper Screen by Pi Supply */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       display_temp: lm75@48 {
+                               compatible = "lm75b";
+                               reg = <0x48>;
+                               status = "okay";
+                               #thermal-sensor-cells = <0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       thermal-zones {
+                               display {
+                                       polling-delay-passive = <0>;
+                                       polling-delay = <0>;
+                                       thermal-sensors = <&display_temp>;
+                               };
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+
+                       spidev@0{
+                               status = "disabled";
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       repaper_pins: repaper_pins {
+                               brcm,pins = <14 15 23 24 25>;
+                               brcm,function = <1 1 1 1 0>; /* out out out out in */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       repaper: repaper@0{
+                               compatible = "not_set";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&repaper_pins>;
+
+                               spi-max-frequency = <8000000>;
+
+                               panel-on-gpios = <&gpio 23 0>;
+                               border-gpios = <&gpio 14 0>;
+                               discharge-gpios = <&gpio 15 0>;
+                               reset-gpios = <&gpio 24 0>;
+                               busy-gpios = <&gpio 25 0>;
+
+                               repaper-thermal-zone = "display";
+                       };
+               };
+       };
+
+       __overrides__ {
+               panel = <&repaper>, "compatible";
+               speed = <&repaper>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts
@@ -0,0 +1,27 @@
+/dts-v1/;
+/plugin/;
+
+/* Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
+   from the VPU. There is a special driver for this with a separate DT node,
+   which has the unfortunate consequence of breaking the act_led_gpio and
+   act_led_activelow dtparams.
+
+   This overlay changes the GPIO controller back to the standard one and
+   restores the dtparams.
+*/
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&act_led>;
+               frag0: __overlay__ {
+                       gpios = <&gpio 0 0>;
+               };
+       };
+
+       __overrides__ {
+               gpio = <&frag0>,"gpios:4";
+               activelow = <&frag0>,"gpios:8";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts
@@ -0,0 +1,46 @@
+/dts-v1/;
+/plugin/;
+
+/* Disable Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15.
+   To disable the systemd service that initialises the modem so it doesn't use
+   the UART:
+
+       sudo systemctl disable hciuart
+*/
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&uart1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&uart0>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&uart0_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&uart0_pins>;
+               __overlay__ {
+                       brcm,pins;
+                       brcm,function;
+                       brcm,pull;
+               };
+       };
+
+       fragment@3 {
+               target-path = "/aliases";
+               __overlay__ {
+                       serial0 = "/soc/serial@7e201000";
+                       serial1 = "/soc/serial@7e215040";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pi3-disable-wifi-overlay.dts
@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&mmc>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
@@ -0,0 +1,74 @@
+/dts-v1/;
+/plugin/;
+
+/* Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore
+   UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum
+   usable baudrate.
+
+   It is also necessary to edit /lib/systemd/system/hciuart.service and
+   replace ttyAMA0 with ttyS0, unless you have a system with udev rules
+   that create /dev/serial0 and /dev/serial1, in which case use /dev/serial1
+   instead because it will always be correct.
+
+   If cmdline.txt uses the alias serial0 to refer to the user-accessable port
+   then the firmware will replace with the appropriate port whether or not
+   this overlay is used.
+*/
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&uart0>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&uart0_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&uart1>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&uart1_pins &bt_pins &fake_bt_cts>;
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target = <&uart0_pins>;
+               __overlay__ {
+                       brcm,pins;
+                       brcm,function;
+                       brcm,pull;
+               };
+       };
+
+       fragment@3 {
+               target = <&uart1_pins>;
+               __overlay__ {
+                       brcm,pins = <32 33>;
+                       brcm,function = <2>; /* alt5=UART1 */
+                       brcm,pull = <0 2>;
+               };
+       };
+
+       fragment@4 {
+               target = <&gpio>;
+               __overlay__ {
+                       fake_bt_cts: fake_bt_cts {
+                               brcm,pins = <31>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@5 {
+               target-path = "/aliases";
+               __overlay__ {
+                       serial0 = "/soc/serial@7e201000";
+                       serial1 = "/soc/serial@7e215040";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pibell-overlay.dts
@@ -0,0 +1,81 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+
+    fragment@0 {
+        target-path = "/";
+        __overlay__ {
+            codec_out: spdif-transmitter {
+                #address-cells = <0>;
+                #size-cells = <0>;
+                #sound-dai-cells = <0>;
+                compatible = "linux,spdif-dit";
+                status = "okay";
+            };
+
+            codec_in: card-codec {
+                #sound-dai-cells = <0>;
+                compatible = "invensense,ics43432";
+                status = "okay";
+            };
+        };
+    };
+
+    fragment@1 {
+        target = <&i2s>;
+        __overlay__ {
+            #sound-dai-cells = <0>;
+            status = "okay";
+        };
+    };
+
+    fragment@2 {
+        target = <&sound>;
+        snd: __overlay__ {
+            compatible = "simple-audio-card";
+            simple-audio-card,name = "PiBell";
+
+            status="okay";
+
+            capture_link: simple-audio-card,dai-link@0 {
+                format = "i2s";
+
+                r_cpu_dai: cpu {
+                    sound-dai = <&i2s>;
+
+/* example TDM slot configuration
+                    dai-tdm-slot-num = <2>;
+                    dai-tdm-slot-width = <32>;
+*/
+                };
+
+                r_codec_dai: codec {
+                    sound-dai = <&codec_in>;
+                };
+            };
+
+            playback_link: simple-audio-card,dai-link@1 {
+                format = "i2s";
+
+                p_cpu_dai: cpu {
+                    sound-dai = <&i2s>;
+
+/* example TDM slot configuration
+                    dai-tdm-slot-num = <2>;
+                    dai-tdm-slot-width = <32>;
+*/
+                };
+
+                p_codec_dai: codec {
+                    sound-dai = <&codec_out>;
+                };
+            };
+        };
+    };
+
+    __overrides__ {
+        alsaname = <&snd>, "simple-audio-card,name";
+    };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
@@ -0,0 +1,102 @@
+/*
+ * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       piscreen_pins: piscreen_pins {
+                               brcm,pins = <17 25 24 22>;
+                               brcm,function = <0 1 1 1>; /* in out out out */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       piscreen: piscreen@0{
+                               compatible = "ilitek,ili9486";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&piscreen_pins>;
+
+                               spi-max-frequency = <24000000>;
+                               rotate = <270>;
+                               bgr;
+                               fps = <30>;
+                               buswidth = <8>;
+                               regwidth = <16>;
+                               reset-gpios = <&gpio 25 0>;
+                               dc-gpios = <&gpio 24 0>;
+                               led-gpios = <&gpio 22 1>;
+                               debug = <0>;
+
+                               init = <0x10000b0 0x00
+                                       0x1000011
+                                       0x20000ff
+                                       0x100003a 0x55
+                                       0x1000036 0x28
+                                       0x10000c2 0x44
+                                       0x10000c5 0x00 0x00 0x00 0x00
+                                       0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00
+                                       0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+                                       0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+                                       0x1000011
+                                       0x1000029>;
+                       };
+
+                       piscreen_ts: piscreen-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <17 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 17 0>;
+                               ti,swap-xy;
+                               ti,x-plate-ohms = /bits/ 16 <100>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =         <&piscreen>,"spi-max-frequency:0";
+               rotate =        <&piscreen>,"rotate:0";
+               fps =           <&piscreen>,"fps:0";
+               debug =         <&piscreen>,"debug:0";
+               xohms =         <&piscreen_ts>,"ti,x-plate-ohms;0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
@@ -0,0 +1,106 @@
+ /*
+ * Device Tree overlay for PiScreen2 3.5" TFT with resistive touch  by Ozzmaker.com
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       piscreen2_pins: piscreen2_pins {
+                               brcm,pins = <17 25 24 22>;
+                               brcm,function = <0 1 1 1>; /* in out out out */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       piscreen2: piscreen2@0{
+                               compatible = "ilitek,ili9486";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&piscreen2_pins>;
+                               bgr;
+                               spi-max-frequency = <64000000>;
+                               rotate = <90>;
+                               fps = <30>;
+                               buswidth = <8>;
+                               regwidth = <16>;
+                               txbuflen = <32768>;
+                               reset-gpios = <&gpio 25 0>;
+                               dc-gpios = <&gpio 24 0>;
+                               led-gpios = <&gpio 22 1>;
+                               debug = <0>;
+
+                                init = <0x10000b0 0x00
+                                        0x1000011
+                                        0x20000ff
+                                        0x100003a 0x55
+                                        0x1000036 0x28
+                                        0x10000c0 0x11 0x09
+                                        0x10000c1 0x41
+                                        0x10000c5 0x00 0x00 0x00 0x00
+                                        0x10000b6 0x00 0x02
+                                        0x10000f7 0xa9 0x51 0x2c 0x2
+                                        0x10000be 0x00 0x04
+                                        0x10000e9 0x00
+                                        0x1000011
+                                        0x1000029>;
+
+                       };
+
+                       piscreen2_ts: piscreen2-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <17 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 17 0>;
+                               ti,swap-xy;
+                               ti,x-plate-ohms = /bits/ 16 <100>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =         <&piscreen2>,"spi-max-frequency:0";
+               rotate =        <&piscreen2>,"rotate:0";
+               fps =           <&piscreen2>,"fps:0";
+               debug =         <&piscreen2>,"debug:0";
+               xohms =         <&piscreen2_ts>,"ti,x-plate-ohms;0";
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pisound-overlay.dts
@@ -0,0 +1,120 @@
+/*
+ * Pisound Linux kernel module.
+ * Copyright (C) 2016-2017  Vilniaus Blokas UAB, https://blokas.io/pisound
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@3 {
+               target = <&spi0>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       pisound_spi: pisound_spi@0{
+                               compatible = "blokaslabs,pisound-spi";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&spi0_pins>;
+                               spi-max-frequency = <1000000>;
+                       };
+               };
+       };
+
+       fragment@4 {
+               target-path = "/";
+               __overlay__ {
+                       pcm5102a-codec {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm5102a";
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@5 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "blokaslabs,pisound";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+
+                       pinctrl-0 = <&pisound_button_pins>;
+
+                       osr-gpios =
+                               <&gpio 13 GPIO_ACTIVE_HIGH>,
+                               <&gpio 26 GPIO_ACTIVE_HIGH>,
+                               <&gpio 16 GPIO_ACTIVE_HIGH>;
+
+                       reset-gpios =
+                               <&gpio 12 GPIO_ACTIVE_HIGH>,
+                               <&gpio 24 GPIO_ACTIVE_HIGH>;
+
+                       data_available-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
+
+                       button-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       fragment@6 {
+               target = <&gpio>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pisound_button_pins>;
+
+                       pisound_button_pins: pisound_button_pins {
+                               brcm,pins = <17>;
+                               brcm,function = <0>; // Input
+                               brcm,pull = <2>; // Pull-Up
+                       };
+               };
+       };
+
+       fragment@7 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
@@ -0,0 +1,69 @@
+/*
+ * Device Tree overlay for pitft by Adafruit
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+        fragment@0 {
+                target = <&spi0>;
+                __overlay__ {
+                        status = "okay";
+
+                        spidev@0{
+                                status = "disabled";
+                        };
+
+                        spidev@1{
+                                status = "disabled";
+                        };
+                };
+        };
+
+        fragment@1 {
+                target = <&gpio>;
+                __overlay__ {
+                        pitft_pins: pitft_pins {
+                                brcm,pins = <25>;
+                                brcm,function = <1>; /* out */
+                                brcm,pull = <0>; /* none */
+                        };
+                };
+        };
+
+        fragment@2 {
+                target = <&spi0>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        pitft: pitft@0{
+                                compatible = "ilitek,ili9340";
+                                reg = <0>;
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pitft_pins>;
+
+                                spi-max-frequency = <32000000>;
+                                rotate = <90>;
+                                fps = <25>;
+                                bgr;
+                                buswidth = <8>;
+                                dc-gpios = <&gpio 25 0>;
+                                debug = <0>;
+                        };
+
+                };
+        };
+
+        __overrides__ {
+                speed =   <&pitft>,"spi-max-frequency:0";
+                rotate =  <&pitft>,"rotate:0";
+                fps =     <&pitft>,"fps:0";
+                debug =   <&pitft>,"debug:0";
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft28-capacitive-overlay.dts
@@ -0,0 +1,91 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" capacitive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+        fragment@0 {
+                target = <&spi0>;
+                __overlay__ {
+                        status = "okay";
+                };
+        };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+        fragment@2 {
+                target = <&gpio>;
+                __overlay__ {
+                        pitft_pins: pitft_pins {
+                                brcm,pins = <24 25>;
+                                brcm,function = <0 1>; /* in out */
+                                brcm,pull = <2 0>; /* pullup none */
+                        };
+                };
+        };
+
+        fragment@3 {
+                target = <&spi0>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        pitft: pitft@0{
+                                compatible = "ilitek,ili9340";
+                                reg = <0>;
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pitft_pins>;
+
+                                spi-max-frequency = <32000000>;
+                                rotate = <90>;
+                                fps = <25>;
+                                bgr;
+                                buswidth = <8>;
+                                dc-gpios = <&gpio 25 0>;
+                                debug = <0>;
+                        };
+                };
+        };
+
+        fragment@4 {
+                target = <&i2c1>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        ft6236: ft6236@38 {
+                                compatible = "focaltech,ft6236";
+                                reg = <0x38>;
+
+                                interrupt-parent = <&gpio>;
+                                interrupts = <24 2>;
+                                touchscreen-size-x = <240>;
+                                touchscreen-size-y = <320>;
+                        };
+                };
+        };
+
+        __overrides__ {
+                speed =   <&pitft>,"spi-max-frequency:0";
+                rotate =  <&pitft>,"rotate:0";
+                fps =     <&pitft>,"fps:0";
+                debug =   <&pitft>,"debug:0";
+                touch-sizex = <&ft6236>,"touchscreen-size-x?";
+                touch-sizey = <&ft6236>,"touchscreen-size-y?";
+                touch-invx  = <&ft6236>,"touchscreen-inverted-x?";
+                touch-invy  = <&ft6236>,"touchscreen-inverted-y?";
+                touch-swapxy = <&ft6236>,"touchscreen-swapped-x-y?";
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts
@@ -0,0 +1,121 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       pitft_pins: pitft_pins {
+                               brcm,pins = <24 25>;
+                               brcm,function = <0 1>; /* in out */
+                               brcm,pull = <2 0>; /* pullup none */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       pitft: pitft@0{
+                               compatible = "ilitek,ili9340";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&pitft_pins>;
+
+                               spi-max-frequency = <32000000>;
+                               rotate = <90>;
+                               fps = <25>;
+                               bgr;
+                               buswidth = <8>;
+                               dc-gpios = <&gpio 25 0>;
+                               debug = <0>;
+                       };
+
+                       pitft_ts@1 {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               compatible = "st,stmpe610";
+                               reg = <1>;
+
+                               spi-max-frequency = <500000>;
+                               irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
+                               interrupts = <24 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               interrupt-controller;
+
+                               stmpe_touchscreen {
+                                       compatible = "st,stmpe-ts";
+                                       st,sample-time = <4>;
+                                       st,mod-12b = <1>;
+                                       st,ref-sel = <0>;
+                                       st,adc-freq = <2>;
+                                       st,ave-ctrl = <3>;
+                                       st,touch-det-delay = <4>;
+                                       st,settling = <2>;
+                                       st,fraction-z = <7>;
+                                       st,i-drive = <0>;
+                               };
+
+                               stmpe_gpio: stmpe_gpio {
+                                       #gpio-cells = <2>;
+                                       compatible = "st,stmpe-gpio";
+                                       /*
+                                        * only GPIO2 is wired/available
+                                        * and it is wired to the backlight
+                                        */
+                                       st,norequest-mask = <0x7b>;
+                               };
+                       };
+               };
+       };
+
+       fragment@5 {
+               target-path = "/soc";
+               __overlay__ {
+                       backlight {
+                               compatible = "gpio-backlight";
+                               gpios = <&stmpe_gpio 2 0>;
+                               default-on;
+                       };
+               };
+       };
+
+       __overrides__ {
+               speed =   <&pitft>,"spi-max-frequency:0";
+               rotate =  <&pitft>,"rotate:0";
+               fps =     <&pitft>,"fps:0";
+               debug =   <&pitft>,"debug:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft35-resistive-overlay.dts
@@ -0,0 +1,121 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 3.5" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       pitft_pins: pitft_pins {
+                               brcm,pins = <24 25>;
+                               brcm,function = <0 1>; /* in out */
+                               brcm,pull = <2 0>; /* pullup none */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       pitft: pitft@0{
+                               compatible = "himax,hx8357d";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&pitft_pins>;
+
+                               spi-max-frequency = <32000000>;
+                               rotate = <90>;
+                               fps = <25>;
+                               bgr;
+                               buswidth = <8>;
+                               dc-gpios = <&gpio 25 0>;
+                               debug = <0>;
+                       };
+
+                       pitft_ts@1 {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               compatible = "st,stmpe610";
+                               reg = <1>;
+
+                               spi-max-frequency = <500000>;
+                               irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
+                               interrupts = <24 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               interrupt-controller;
+
+                               stmpe_touchscreen {
+                                       compatible = "st,stmpe-ts";
+                                       st,sample-time = <4>;
+                                       st,mod-12b = <1>;
+                                       st,ref-sel = <0>;
+                                       st,adc-freq = <2>;
+                                       st,ave-ctrl = <3>;
+                                       st,touch-det-delay = <4>;
+                                       st,settling = <2>;
+                                       st,fraction-z = <7>;
+                                       st,i-drive = <0>;
+                               };
+
+                               stmpe_gpio: stmpe_gpio {
+                                       #gpio-cells = <2>;
+                                       compatible = "st,stmpe-gpio";
+                                       /*
+                                        * only GPIO2 is wired/available
+                                        * and it is wired to the backlight
+                                        */
+                                       st,norequest-mask = <0x7b>;
+                               };
+                       };
+               };
+       };
+
+       fragment@5 {
+               target-path = "/soc";
+               __overlay__ {
+                       backlight {
+                               compatible = "gpio-backlight";
+                               gpios = <&stmpe_gpio 2 0>;
+                               default-on;
+                       };
+               };
+       };
+
+       __overrides__ {
+               speed =   <&pitft>,"spi-max-frequency:0";
+               rotate =  <&pitft>,"rotate:0";
+               fps =     <&pitft>,"fps:0";
+               debug =   <&pitft>,"debug:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pps-gpio-overlay.dts
@@ -0,0 +1,38 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       pps: pps@12 {
+                               compatible = "pps-gpio";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&pps_pins>;
+                               gpios = <&gpio 18 0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       pps_pins: pps_pins@12 {
+                               brcm,pins =     <18>;
+                               brcm,function = <0>;    // in
+                               brcm,pull =     <0>;    // off
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpiopin = <&pps>,"gpios:4",
+                         <&pps>,"reg:0",
+                         <&pps_pins>,"brcm,pins:0",
+                         <&pps_pins>,"reg:0";
+               assert_falling_edge = <&pps>,"assert-falling-edge?";
+               capture_clear = <&pps>,"capture-clear?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pwm-2chan-overlay.dts
@@ -0,0 +1,47 @@
+/dts-v1/;
+/plugin/;
+
+/*
+This is the 2-channel overlay - only use it if you need both channels.
+
+Legal pin,function combinations for each channel:
+  PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
+  PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
+
+N.B.:
+  1) Pin 18 is the only one available on all platforms, and
+     it is the one used by the I2S audio interface.
+     Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
+  2) The onboard analogue audio output uses both PWM channels.
+  3) So be careful mixing audio and PWM.
+*/
+
+/ {
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       pwm_pins: pwm_pins {
+                               brcm,pins = <18 19>;
+                               brcm,function = <2 2>; /* Alt5 */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&pwm>;
+               frag1: __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pwm_pins>;
+                       assigned-clock-rates = <100000000>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               pin   = <&pwm_pins>,"brcm,pins:0";
+               pin2  = <&pwm_pins>,"brcm,pins:4";
+               func  = <&pwm_pins>,"brcm,function:0";
+               func2 = <&pwm_pins>,"brcm,function:4";
+               clock = <&frag1>,"assigned-clock-rates:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pwm-ir-tx-overlay.dts
@@ -0,0 +1,40 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       pwm0_pins: pwm0_pins {
+                               brcm,pins = <18>;
+                               brcm,function = <2>; /* Alt5 */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&pwm>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pwm0_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@2 {
+               target-path = "/";
+               __overlay__ {
+                       pwm-ir-transmitter {
+                               compatible = "pwm-ir-tx";
+                               pwms = <&pwm 0 100>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpio_pin = <&pwm0_pins>, "brcm,pins:0";
+               func = <&pwm0_pins>,"brcm,function:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pwm-overlay.dts
@@ -0,0 +1,43 @@
+/dts-v1/;
+/plugin/;
+
+/*
+Legal pin,function combinations for each channel:
+  PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0)            52,5(Alt1)
+  PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
+
+N.B.:
+  1) Pin 18 is the only one available on all platforms, and
+     it is the one used by the I2S audio interface.
+     Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
+  2) The onboard analogue audio output uses both PWM channels.
+  3) So be careful mixing audio and PWM.
+*/
+
+/ {
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       pwm_pins: pwm_pins {
+                               brcm,pins = <18>;
+                               brcm,function = <2>; /* Alt5 */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&pwm>;
+               frag1: __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pwm_pins>;
+                       assigned-clock-rates = <100000000>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               pin   = <&pwm_pins>,"brcm,pins:0";
+               func  = <&pwm_pins>,"brcm,function:0";
+               clock = <&frag1>,"assigned-clock-rates:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/qca7000-overlay.dts
@@ -0,0 +1,52 @@
+// Overlay for the Qualcomm Atheros QCA7000 on I2SE's PLC Stamp micro EVK
+// Visit: https://www.i2se.com/product/plc-stamp-micro-evk for details
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       spidev@0 {
+                               status = "disabled";
+                       };
+
+                       eth1: qca7000@0 {
+                               compatible = "qca,qca7000";
+                               reg = <0>; /* CE0 */
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&eth1_pins>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <23 0x1>; /* rising edge */
+                               spi-max-frequency = <12000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       eth1_pins: eth1_pins {
+                               brcm,pins = <23>;
+                               brcm,function = <0>; /* in */
+                               brcm,pull = <0>; /* none */
+                       };
+               };
+       };
+
+       __overrides__ {
+               int_pin = <&eth1>, "interrupts:0",
+                         <&eth1_pins>, "brcm,pins:0";
+               speed   = <&eth1>, "spi-max-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rotary-encoder-overlay.dts
@@ -0,0 +1,59 @@
+// Device tree overlay for GPIO connected rotary encoder.
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       rotary_pins: rotary_pins@4 {
+                               brcm,pins = <4 17>; /* gpio 4 17 */
+                               brcm,function = <0 0>; /* input */
+                               brcm,pull = <2 2>; /* pull-up */
+                       };
+
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       rotary: rotary@4 {
+                               compatible = "rotary-encoder";
+                               status = "okay";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&rotary_pins>;
+                               gpios = <&gpio 4 0>, <&gpio 17 0>;
+                               linux,axis = <0>; /* REL_X */
+                               rotary-encoder,encoding = "gray";
+                               rotary-encoder,steps = <24>; /* 24 default */
+                               rotary-encoder,steps-per-period = <1>; /* corresponds to full period mode. See README */
+                       };
+               };
+
+       };  
+
+       __overrides__ {
+               pin_a =             <&rotary>,"gpios:4",
+                                   <&rotary_pins>,"brcm,pins:0",
+                                   /* modify reg values to allow multiple instantiation */
+                                   <&rotary>,"reg:0",
+                                   <&rotary_pins>,"reg:0";
+               pin_b =             <&rotary>,"gpios:16",
+                                   <&rotary_pins>,"brcm,pins:4";
+               relative_axis =     <&rotary>,"rotary-encoder,relative-axis?";
+               linux_axis =        <&rotary>,"linux,axis:0";
+               rollover =          <&rotary>,"rotary-encoder,rollover?";
+               steps-per-period =  <&rotary>,"rotary-encoder,steps-per-period:0";
+               steps =             <&rotary>,"rotary-encoder,steps:0";
+               wakeup =            <&rotary>,"wakeup-source?";
+               encoding =          <&rotary>,"rotary-encoder,encoding";
+                /* legacy parameters*/
+               rotary0_pin_a =     <&rotary>,"gpios:4",
+                                   <&rotary_pins>,"brcm,pins:0";
+               rotary0_pin_b =     <&rotary>,"gpios:16",
+                                   <&rotary_pins>,"brcm,pins:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-backlight-overlay.dts
@@ -0,0 +1,21 @@
+/*
+ * Devicetree overlay for mailbox-driven Raspberry Pi DSI Display
+ * backlight controller
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       rpi_backlight: rpi_backlight {
+                               compatible = "raspberrypi,rpi-backlight";
+                               firmware = <&firmware>;
+                               status = "okay";
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-cirrus-wm5102-overlay.dts
@@ -0,0 +1,146 @@
+// Definitions for the Cirrus Logic Audio Card
+/dts-v1/;
+/plugin/;
+#include <dt-bindings/pinctrl/bcm2835.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/mfd/arizona.h>
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       wlf_pins: wlf_pins {
+                               brcm,pins = <17 22 27 8>;
+                               brcm,function = <
+                                       BCM2835_FSEL_GPIO_OUT
+                                       BCM2835_FSEL_GPIO_OUT
+                                       BCM2835_FSEL_GPIO_IN
+                                       BCM2835_FSEL_GPIO_OUT
+                               >;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target-path = "/";
+               __overlay__ {
+                       rpi_cirrus_reg_1v8: rpi_cirrus_reg_1v8 {
+                               compatible = "regulator-fixed";
+                               regulator-name = "RPi-Cirrus 1v8";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <1800000>;
+                               regulator-always-on;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target = <&spi0>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       spidev@0{
+                               status = "disabled";
+                       };
+
+                       spidev@1{
+                               status = "disabled";
+                       };
+
+                       wm5102@1{
+                               compatible = "wlf,wm5102";
+                               reg = <1>;
+
+                               spi-max-frequency = <500000>;
+
+                               interrupt-parent = <&gpio>;
+                               interrupts = <27 8>;
+                               interrupt-controller;
+                               #interrupt-cells = <2>;
+
+                               gpio-controller;
+                               #gpio-cells = <2>;
+
+                               LDOVDD-supply = <&rpi_cirrus_reg_1v8>;
+                               AVDD-supply = <&rpi_cirrus_reg_1v8>;
+                               DBVDD1-supply = <&rpi_cirrus_reg_1v8>;
+                               DBVDD2-supply = <&vdd_3v3_reg>;
+                               DBVDD3-supply = <&vdd_3v3_reg>;
+                               CPVDD-supply = <&rpi_cirrus_reg_1v8>;
+                               SPKVDDL-supply = <&vdd_5v0_reg>;
+                               SPKVDDR-supply = <&vdd_5v0_reg>;
+                               DCVDD-supply = <&arizona_ldo1>;
+
+                               wlf,reset = <&gpio 17 GPIO_ACTIVE_HIGH>;
+                               wlf,ldoena = <&gpio 22 GPIO_ACTIVE_HIGH>;
+                               wlf,gpio-defaults = <
+                                       ARIZONA_GP_DEFAULT
+                                       ARIZONA_GP_DEFAULT
+                                       ARIZONA_GP_DEFAULT
+                                       ARIZONA_GP_DEFAULT
+                                       ARIZONA_GP_DEFAULT
+                               >;
+                               wlf,micd-configs = <0 1 0>;
+                               wlf,dmic-ref = <
+                                       ARIZONA_DMIC_MICVDD
+                                       ARIZONA_DMIC_MICBIAS2
+                                       ARIZONA_DMIC_MICVDD
+                                       ARIZONA_DMIC_MICVDD
+                               >;
+                               wlf,inmode = <
+                                       ARIZONA_INMODE_DIFF
+                                       ARIZONA_INMODE_DMIC
+                                       ARIZONA_INMODE_SE
+                                       ARIZONA_INMODE_DIFF
+                               >;
+                               status = "okay";
+
+                               arizona_ldo1: ldo1 {
+                                       regulator-name = "LDO1";
+                                       // default constraints as in
+                                       // arizona-ldo1.c
+                                       regulator-min-microvolt = <1200000>;
+                                       regulator-max-microvolt = <1800000>;
+                               };
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&i2c1>;
+               __overlay__ {
+                       status = "okay";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       wm8804@3b {
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               status = "okay";
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                               wlf,reset-gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
+                       };
+               };
+       };
+
+       fragment@5 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "wlf,rpi-cirrus";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-dac-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for RPi DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target-path = "/";
+               __overlay__ {
+                       pcm1794a-codec {
+                               #sound-dai-cells = <0>;
+                               compatible = "ti,pcm1794a";
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "rpi,rpi-dac";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
@@ -0,0 +1,91 @@
+/*
+ * Device Tree overlay for rpi-display by Watterott
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       rpi_display_pins: rpi_display_pins {
+                               brcm,pins = <18 23 24 25>;
+                               brcm,function = <1 1 1 0>; /* out out out in */
+                               brcm,pull = <0 0 0 2>; /* - - - up */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       rpidisplay: rpi-display@0{
+                               compatible = "ilitek,ili9341";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&rpi_display_pins>;
+
+                               spi-max-frequency = <32000000>;
+                               rotate = <270>;
+                               bgr;
+                               fps = <30>;
+                               buswidth = <8>;
+                               reset-gpios = <&gpio 23 0>;
+                               dc-gpios = <&gpio 24 0>;
+                               led-gpios = <&gpio 18 1>;
+                               debug = <0>;
+                       };
+
+                       rpidisplay_ts: rpi-display-ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <25 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 25 0>;
+                               ti,x-plate-ohms = /bits/ 16 <60>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+       __overrides__ {
+               speed =     <&rpidisplay>,"spi-max-frequency:0";
+               rotate =    <&rpidisplay>,"rotate:0";
+               fps =       <&rpidisplay>,"fps:0";
+               debug =     <&rpidisplay>,"debug:0";
+               xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+               swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
+               backlight = <&rpidisplay>,"led-gpios:4",
+                           <&rpi_display_pins>,"brcm,pins:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts
@@ -0,0 +1,30 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+                       rpi_ft5406: rpi_ft5406 {
+                               compatible = "rpi,rpi-ft5406";
+                               firmware = <&firmware>;
+                               status = "okay";
+                               touchscreen-size-x = <800>;
+                               touchscreen-size-y = <480>;
+                               touchscreen-inverted-x = <0>;
+                               touchscreen-inverted-y = <0>;
+                               touchscreen-swapped-x-y = <0>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               touchscreen-size-x = <&rpi_ft5406>,"touchscreen-size-x:0";
+               touchscreen-size-y = <&rpi_ft5406>,"touchscreen-size-y:0";
+               touchscreen-inverted-x = <&rpi_ft5406>,"touchscreen-inverted-x:0";
+               touchscreen-inverted-y = <&rpi_ft5406>,"touchscreen-inverted-y:0";
+               touchscreen-swapped-x-y = <&rpi_ft5406>,"touchscreen-swapped-x-y:0";
+        };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-proto-overlay.dts
@@ -0,0 +1,39 @@
+// Definitions for Rpi-Proto
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8731@1a {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8731";
+                               reg = <0x1a>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "rpi,rpi-proto";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-sense-overlay.dts
@@ -0,0 +1,47 @@
+// rpi-sense HAT
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       rpi-sense@46 {
+                               compatible = "rpi,rpi-sense";
+                               reg = <0x46>;
+                               keys-int-gpios = <&gpio 23 1>;
+                               status = "okay";
+                       };
+
+                       lsm9ds1-magn@1c {
+                               compatible = "st,lsm9ds1-magn";
+                               reg = <0x1c>;
+                               status = "okay";
+                       };
+
+                       lsm9ds1-accel6a {
+                               compatible = "st,lsm9ds1-accel";
+                               reg = <0x6a>;
+                               status = "okay";
+                       };
+
+                       lps25h-press@5c {
+                               compatible = "st,lps25h-press";
+                               reg = <0x5c>;
+                               status = "okay";
+                       };
+
+                       hts221-humid@5f {
+                               compatible = "st,hts221-humid";
+                               reg = <0x5f>;
+                               status = "okay";
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rpi-tv-overlay.dts
@@ -0,0 +1,31 @@
+// rpi-tv HAT
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       spidev@0 {
+                               status = "disabled";
+                       };
+
+                       cxd2880@0 {
+                               compatible = "sony,cxd2880";
+                               reg = <0>; /* CE0 */
+                               spi-max-frequency = <50000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/rra-digidac1-wm8741-audio-overlay.dts
@@ -0,0 +1,49 @@
+// Definitions for RRA DigiDAC1 Audio card
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       wm8804@3b {
+                               #sound-dai-cells = <0>;
+                               compatible = "wlf,wm8804";
+                               reg = <0x3b>;
+                               status = "okay";
+                               PVDD-supply = <&vdd_3v3_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                       };
+
+                       wm8742: wm8741@1a {
+                               compatible = "wlf,wm8741";
+                               reg = <0x1a>;
+                               status = "okay";
+                               AVDD-supply = <&vdd_5v0_reg>;
+                               DVDD-supply = <&vdd_3v3_reg>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "rra,digidac1-soundcard";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sc16is750-i2c-overlay.dts
@@ -0,0 +1,37 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&i2c_arm>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       sc16is750: sc16is750@48 {
+                               compatible = "nxp,sc16is750";
+                               reg = <0x48>; /* address */
+                               clocks = <&sc16is750_clk>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
+                               #gpio-cells = <2>;
+
+                               sc16is750_clk: sc16is750_clk {
+                                       compatible = "fixed-clock";
+                                       #clock-cells = <0>;
+                                       clock-frequency = <14745600>;
+                               };
+                       };
+               };
+       };
+
+
+       __overrides__ {
+               int_pin = <&sc16is750>,"interrupts:0";
+               addr = <&sc16is750>,"reg:0";
+       };
+
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sc16is752-i2c-overlay.dts
@@ -0,0 +1,40 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835";
+
+       fragment@0 {
+               target = <&i2c1>;
+
+               frag1: __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       sc16is752: sc16is752@48 {
+                               compatible = "nxp,sc16is752";
+                               reg = <0x48>; // i2c address
+                               clocks = <&sc16is752_clk>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <24 0x2>; /* IRQ_TYPE_EDGE_FALLING */
+                               gpio-controller;
+                               #gpio-cells = <0>;
+                               i2c-max-frequency = <400000>;
+                               status = "okay";
+
+                               sc16is752_clk: sc16is752_clk {
+                                       compatible = "fixed-clock";
+                                       #clock-cells = <0>;
+                                       clock-frequency = <14745600>;
+                               };
+                       };
+               };
+       };
+
+       __overrides__ {
+               int_pin = <&sc16is752>,"interrupts:0";
+               addr = <&sc16is752>,"reg:0";
+               xtal = <&sc16is752>,"clock-frequency:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
@@ -0,0 +1,61 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi1_pins: spi1_pins {
+                               brcm,pins = <19 20 21>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi1_cs_pins: spi1_cs_pins {
+                               brcm,pins = <18>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi1>;
+               frag1: __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
+                       cs-gpios = <&gpio 18 1>;
+                       status = "okay";
+
+                       sc16is752: sc16is752@0 {
+                               compatible = "nxp,sc16is752";
+                               reg = <0>; /* CE0 */
+                               clocks = <&sc16is752_clk>;
+                               interrupt-parent = <&gpio>;
+                               interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
+                               #gpio-controller;
+                               #gpio-cells = <2>;
+                               spi-max-frequency = <4000000>;
+
+                               sc16is752_clk: sc16is752_clk {
+                                       compatible = "fixed-clock";
+                                       #clock-cells = <0>;
+                                       clock-frequency = <14745600>;
+                               };
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+    __overrides__ {
+      int_pin = <&sc16is752>,"interrupts:0";
+    };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sdhost-overlay.dts
@@ -0,0 +1,31 @@
+/dts-v1/;
+/plugin/;
+
+/* Provide backwards compatible aliases for the old sdhost dtparams. */
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&sdhost>;
+               frag0: __overlay__ {
+                       brcm,overclock-50 = <0>;
+                       brcm,pio-limit = <1>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&mmc>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       __overrides__ {
+               overclock_50     = <&frag0>,"brcm,overclock-50:0";
+               force_pio        = <&frag0>,"brcm,force-pio?";
+               pio_limit        = <&frag0>,"brcm,pio-limit:0";
+               debug            = <&frag0>,"brcm,debug?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sdio-1bit-overlay.dts
@@ -0,0 +1,63 @@
+/dts-v1/;
+/plugin/;
+
+/* Enable 1-bit SDIO from MMC interface via GPIOs 22-25. Includes sdhost overlay. */
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&mmc>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&soc>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       sdio_1bit: sdio@7e300000 {
+                               compatible = "brcm,bcm2835-mmc",
+                                            "brcm,bcm2835-sdhci";
+                               reg = <0x7e300000 0x100>;
+                               interrupts = <2 30>;
+                               clocks = <&clocks 28/*BCM2835_CLOCK_EMMC*/>;
+                               dmas = <&dma 11>;
+                               dma-names = "rx-tx";
+                               brcm,overclock-50 = <0>;
+                               status = "okay";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&sdio_1bit_pins>;
+                               non-removable;
+                               bus-width = <1>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&gpio>;
+               __overlay__ {
+                       sdio_1bit_pins: sdio_1bit_pins {
+                               brcm,pins = <22 23 24 25>;
+                               brcm,function = <7>; /* ALT3 = SD1 */
+                               brcm,pull = <0 2 2 2>;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target-path = "/aliases";
+               __overlay__ {
+                       mmc1 = "/soc/sdio@7e300000";
+               };
+       };
+
+
+       __overrides__ {
+               poll_once = <&sdio_1bit>,"non-removable?";
+               sdio_overclock = <&sdio_1bit>,"brcm,overclock-50:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts
@@ -0,0 +1,63 @@
+/dts-v1/;
+/plugin/;
+
+/* Enable SDIO from MMC interface via GPIOs 22-27. Includes sdhost overlay. */
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&mmc>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&soc>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       sdio_ovl: sdio@7e300000 {
+                               compatible = "brcm,bcm2835-mmc",
+                                            "brcm,bcm2835-sdhci";
+                               reg = <0x7e300000 0x100>;
+                               interrupts = <2 30>;
+                               clocks = <&clocks 28/*BCM2835_CLOCK_EMMC*/>;
+                               dmas = <&dma 11>;
+                               dma-names = "rx-tx";
+                               brcm,overclock-50 = <0>;
+                               status = "okay";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&sdio_ovl_pins>;
+                               non-removable;
+                               bus-width = <1>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&gpio>;
+               __overlay__ {
+                       sdio_ovl_pins: sdio_ovl_pins {
+                               brcm,pins = <22 23 24 25 26 27>;
+                               brcm,function = <7>; /* ALT3 = SD1 */
+                               brcm,pull = <0 2 2 2 2 2>;
+                       };
+               };
+       };
+
+       fragment@3 {
+               target-path = "/aliases";
+               __overlay__ {
+                       mmc1 = "/soc/sdio@7e300000";
+               };
+       };
+
+       __overrides__ {
+               poll_once = <&sdio_ovl>,"non-removable?";
+               bus_width = <&sdio_ovl>,"bus-width:0";
+               sdio_overclock = <&sdio_ovl>,"brcm,overclock-50:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sdtweak-overlay.dts
@@ -0,0 +1,25 @@
+/dts-v1/;
+/plugin/;
+
+/* Provide backwards compatible aliases for the old sdhost dtparams. */
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&sdhost>;
+               frag0: __overlay__ {
+                       brcm,overclock-50 = <0>;
+                       brcm,pio-limit = <1>;
+               };
+       };
+
+       __overrides__ {
+               overclock_50     = <&frag0>,"brcm,overclock-50:0";
+               force_pio        = <&frag0>,"brcm,force-pio?";
+               pio_limit        = <&frag0>,"brcm,pio-limit:0";
+               debug            = <&frag0>,"brcm,debug?";
+               enable           = <&frag0>,"status";
+               poll_once        = <&frag0>,"non-removable?";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/smi-dev-overlay.dts
@@ -0,0 +1,18 @@
+// Description: Overlay to enable character device interface for SMI.
+// Author:     Luke Wren <luke@raspberrypi.org>
+
+/dts-v1/;
+/plugin/;
+
+/{
+       fragment@0 {
+               target = <&soc>;
+               __overlay__ {
+                       smi_dev {
+                               compatible = "brcm,bcm2835-smi-dev";
+                               smi_handle = <&smi>;
+                               status = "okay";
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/smi-nand-overlay.dts
@@ -0,0 +1,69 @@
+// Description: Overlay to enable NAND flash through
+// the secondary memory interface
+// Author:     Luke Wren
+
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&smi>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&smi_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&soc>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       nand: flash@0 {
+                               compatible = "brcm,bcm2835-smi-nand";
+                               smi_handle = <&smi>;
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+                               status = "okay";
+
+                               partition@0 {
+                                       label = "stage2";
+                                       // 128k
+                                       reg = <0 0x20000>;
+                                       read-only;
+                               };
+                               partition@1 {
+                                       label = "firmware";
+                                       // 16M
+                                       reg = <0x20000 0x1000000>;
+                                       read-only;
+                               };
+                               partition@2 {
+                                       label = "root";
+                                       // 2G (will need to use 64 bit for >=4G)
+                                       reg = <0x1020000 0x80000000>;
+                               };
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&gpio>;
+               __overlay__ {
+                       smi_pins: smi_pins {
+                               brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
+                                       12 13 14 15>;
+                               /* Alt 1: SMI */
+                               brcm,function = <5 5 5 5 5 5 5 5 5 5 5
+                                       5 5 5 5 5>;
+                               /* /CS, /WE and /OE are pulled high, as they are
+                                  generally active low signals */
+                               brcm,pull = <2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0>;
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/smi-overlay.dts
@@ -0,0 +1,37 @@
+// Description:        Overlay to enable the secondary memory interface peripheral
+// Author:     Luke Wren
+
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&smi>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&smi_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       smi_pins: smi_pins {
+                               /* Don't configure the top two address bits, as
+                                  these are already used as ID_SD and ID_SC */
+                               brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 13 14 15
+                                            16 17 18 19 20 21 22 23 24 25>;
+                               /* Alt 0: SMI */
+                               brcm,function = <5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
+                                                5 5 5 5 5 5 5 5 5>;
+                               /* /CS, /WE and /OE are pulled high, as they are
+                                  generally active low signals */
+                               brcm,pull = <2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0
+                                            0 0 0 0 0 0 0>;
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi-gpio35-39-overlay.dts
@@ -0,0 +1,31 @@
+/*
+ * Device tree overlay to move spi0 to gpio 35 to 39 on CM
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       cs-gpios = <&gpio 36 1>, <&gpio 35 1>;
+               };
+       };
+
+       fragment@1 {
+               target = <&spi0_cs_pins>;
+               __overlay__ {
+                       brcm,pins = <36 35>;
+               };
+       };
+
+       fragment@2 {
+               target = <&spi0_pins>;
+               __overlay__ {
+                       brcm,pins = <37 38 39>;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi-rtc-overlay.dts
@@ -0,0 +1,33 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&spidev0>;
+               __dormant__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@1 {
+               target = <&spi0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       rtc-pcf2123@0 {
+                               compatible = "nxp,rtc-pcf2123";
+                               spi-max-frequency = <5000000>;
+                               spi-cs-high = <1>;
+                               reg = <0>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               pcf2123 = <0>, "=0=1";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi0-cs-overlay.dts
@@ -0,0 +1,29 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0_cs_pins>;
+               frag0: __overlay__ {
+                       brcm,pins = <8 7>;
+               };
+       };
+
+       fragment@1 {
+               target = <&spi0>;
+               frag1: __overlay__ {
+                       cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&frag0>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs1_pin  = <&frag0>,"brcm,pins:4",
+                          <&frag1>,"cs-gpios:16";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi0-hw-cs-overlay.dts
@@ -0,0 +1,26 @@
+/*
+ * Device tree overlay to re-enable hardware CS for SPI0
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       cs-gpios = <0>, <0>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spi0_cs_pins>;
+               __overlay__ {
+                       brcm,pins = <8 7>;
+                       brcm,function = <4>; /* alt0 */
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts
@@ -0,0 +1,57 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi1_pins: spi1_pins {
+                               brcm,pins = <19 20 21>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi1_cs_pins: spi1_cs_pins {
+                               brcm,pins = <18>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi1>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
+                       cs-gpios = <&gpio 18 1>;
+                       status = "okay";
+
+                       spidev1_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs0_spidev = <&spidev1_0>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi1-2cs-overlay.dts
@@ -0,0 +1,69 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi1_pins: spi1_pins {
+                               brcm,pins = <19 20 21>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi1_cs_pins: spi1_cs_pins {
+                               brcm,pins = <18 17>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi1>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
+                       cs-gpios = <&gpio 18 1>, <&gpio 17 1>;
+                       status = "okay";
+
+                       spidev1_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev1_1: spidev@1 {
+                               compatible = "spidev";
+                               reg = <1>;      /* CE1 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs1_pin  = <&spi1_cs_pins>,"brcm,pins:4",
+                          <&frag1>,"cs-gpios:16";
+               cs0_spidev = <&spidev1_0>,"status";
+               cs1_spidev = <&spidev1_1>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi1-3cs-overlay.dts
@@ -0,0 +1,81 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi1_pins: spi1_pins {
+                               brcm,pins = <19 20 21>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi1_cs_pins: spi1_cs_pins {
+                               brcm,pins = <18 17 16>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi1>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
+                       cs-gpios = <&gpio 18 1>, <&gpio 17 1>, <&gpio 16 1>;
+                       status = "okay";
+
+                       spidev1_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev1_1: spidev@1 {
+                               compatible = "spidev";
+                               reg = <1>;      /* CE1 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev1_2: spidev@2 {
+                               compatible = "spidev";
+                               reg = <2>;      /* CE2 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi1_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs1_pin  = <&spi1_cs_pins>,"brcm,pins:4",
+                          <&frag1>,"cs-gpios:16";
+               cs2_pin  = <&spi1_cs_pins>,"brcm,pins:8",
+                          <&frag1>,"cs-gpios:28";
+               cs0_spidev = <&spidev1_0>,"status";
+               cs1_spidev = <&spidev1_1>,"status";
+               cs2_spidev = <&spidev1_2>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi2-1cs-overlay.dts
@@ -0,0 +1,57 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi2_pins: spi2_pins {
+                               brcm,pins = <40 41 42>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi2_cs_pins: spi2_cs_pins {
+                               brcm,pins = <43>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi2>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
+                       cs-gpios = <&gpio 43 1>;
+                       status = "okay";
+
+                       spidev2_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs0_spidev = <&spidev2_0>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi2-2cs-overlay.dts
@@ -0,0 +1,69 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi2_pins: spi2_pins {
+                               brcm,pins = <40 41 42>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi2_cs_pins: spi2_cs_pins {
+                               brcm,pins = <43 44>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi2>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
+                       cs-gpios = <&gpio 43 1>, <&gpio 44 1>;
+                       status = "okay";
+
+                       spidev2_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev2_1: spidev@1 {
+                               compatible = "spidev";
+                               reg = <1>;      /* CE1 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs1_pin  = <&spi2_cs_pins>,"brcm,pins:4",
+                          <&frag1>,"cs-gpios:16";
+               cs0_spidev = <&spidev2_0>,"status";
+               cs1_spidev = <&spidev2_1>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/spi2-3cs-overlay.dts
@@ -0,0 +1,81 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&gpio>;
+               __overlay__ {
+                       spi2_pins: spi2_pins {
+                               brcm,pins = <40 41 42>;
+                               brcm,function = <3>; /* alt4 */
+                       };
+
+                       spi2_cs_pins: spi2_cs_pins {
+                               brcm,pins = <43 44 45>;
+                               brcm,function = <1>; /* output */
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&spi2>;
+               frag1: __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&spi2_pins &spi2_cs_pins>;
+                       cs-gpios = <&gpio 43 1>, <&gpio 44 1>, <&gpio 45 1>;
+                       status = "okay";
+
+                       spidev2_0: spidev@0 {
+                               compatible = "spidev";
+                               reg = <0>;      /* CE0 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev2_1: spidev@1 {
+                               compatible = "spidev";
+                               reg = <1>;      /* CE1 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+
+                       spidev2_2: spidev@2 {
+                               compatible = "spidev";
+                               reg = <2>;      /* CE2 */
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               spi-max-frequency = <125000000>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@2 {
+               target = <&aux>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cs0_pin  = <&spi2_cs_pins>,"brcm,pins:0",
+                          <&frag1>,"cs-gpios:4";
+               cs1_pin  = <&spi2_cs_pins>,"brcm,pins:4",
+                          <&frag1>,"cs-gpios:16";
+               cs2_pin  = <&spi2_cs_pins>,"brcm,pins:8",
+                          <&frag1>,"cs-gpios:28";
+               cs0_spidev = <&spidev2_0>,"status";
+               cs1_spidev = <&spidev2_1>,"status";
+               cs2_spidev = <&spidev2_2>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/superaudioboard-overlay.dts
@@ -0,0 +1,73 @@
+// Definitions for SuperAudioBoard
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&sound>;
+               __overlay__ {
+                       compatible = "simple-audio-card";
+                       i2s-controller = <&i2s>;
+                       status = "okay";
+
+                       simple-audio-card,name = "SuperAudioBoard";
+
+                       simple-audio-card,widgets =
+                               "Line", "Line In",
+                               "Line", "Line Out";
+
+                       simple-audio-card,routing =
+                               "Line Out","AOUTA+",
+                               "Line Out","AOUTA-",
+                               "Line Out","AOUTB+",
+                               "Line Out","AOUTB-",
+                               "AINA","Line In",
+                               "AINB","Line In";
+
+                       simple-audio-card,format = "i2s";
+
+                       simple-audio-card,bitclock-master = <&sound_master>;
+                       simple-audio-card,frame-master = <&sound_master>;
+
+                       simple-audio-card,cpu {
+                               sound-dai = <&i2s>;
+                               dai-tdm-slot-num = <2>;
+                               dai-tdm-slot-width = <32>;
+                       };
+
+                       sound_master: simple-audio-card,codec {
+                               sound-dai = <&cs4271>;
+                               system-clock-frequency = <24576000>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2s>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+    
+       fragment@2 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       status = "okay";
+
+                       cs4271: cs4271@10 {
+                               #sound-dai-cells = <0>;
+                               compatible = "cirrus,cs4271";
+                               reg = <0x10>;
+                               status = "okay";
+                               reset-gpio = <&gpio 26 0>; /* Pin 26, active high */
+                       };
+               };
+       };
+       __overrides__ {
+               gpiopin = <&cs4271>,"reset-gpio:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/sx150x-overlay.dts
@@ -0,0 +1,1706 @@
+// Definitions for SX150x I2C GPIO Expanders from Semtech
+
+// dtparams:
+//     sx150<x>-<n>-<m>          - Enables SX150X device on I2C#<n> with slave address <m>. <x> may be 1-9.
+//                                 <n> may be 0 or 1.  Permissible values of <m> (which is denoted in hex)
+//                                 depend on the device variant.
+//                                 For SX1501, SX1502, SX1504 and SX1505, <m> may be 20 or 21.
+//                                 For SX1503 and SX1506, <m> may be 20.
+//                                 For SX1507 and SX1509, <m> may be 3E, 3F, 70 or 71.
+//                                 For SX1508, <m> may be 20, 21, 22 or 23.
+//     sx150<x>-<n>-<m>-int-gpio - Integer, enables interrupts on SX150X device on I2C#<n> with slave address <m>,
+//                                 specifies the GPIO pin to which NINT output of SX150X is connected.
+//
+//
+// Example 1: A single SX1505 device on I2C#1 with its slave address set to 0x20 and NINT output connected to GPIO25:
+// dtoverlay=sx150x:sx1505-1-20,sx1505-1-20-int-gpio=25
+//
+// Example 2: Two SX1507 devices on I2C#0 with their slave addresses set to 0x3E and 0x70 (interrupts not used):
+// dtoverlay=sx150x:sx1507-0-3E,sx1507-0-70
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       // Enable I2C#0 interface
+       fragment@0 {
+               target = <&i2c0>;
+               __dormant__ {
+                       status = "okay";
+               };
+       };
+
+       // Enable I2C#1 interface
+       fragment@1 {
+               target = <&i2c1>;
+               __dormant__ {
+                       status = "okay";
+               };
+       };
+
+       // Enable a SX1501 on I2C#0 at slave addr 0x20
+       fragment@2 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1501_0_20: sx150x@20 {
+                               compatible = "semtech,sx1501q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1501-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1501 on I2C#1 at slave addr 0x20
+       fragment@3 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1501_1_20: sx150x@20 {
+                               compatible = "semtech,sx1501q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1501-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1501 on I2C#0 at slave addr 0x21
+       fragment@4 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1501_0_21: sx150x@21 {
+                               compatible = "semtech,sx1501q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1501-0-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1501 on I2C#1 at slave addr 0x21
+       fragment@5 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1501_1_21: sx150x@21 {
+                               compatible = "semtech,sx1501q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1501-1-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1502 on I2C#0 at slave addr 0x20
+       fragment@6 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1502_0_20: sx150x@20 {
+                               compatible = "semtech,sx1502q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1502-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1502 on I2C#1 at slave addr 0x20
+       fragment@7 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1502_1_20: sx150x@20 {
+                               compatible = "semtech,sx1502q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1502-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1502 on I2C#0 at slave addr 0x21
+       fragment@8 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1502_0_21: sx150x@21 {
+                               compatible = "semtech,sx1502q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1502-0-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1502 on I2C#1 at slave addr 0x21
+       fragment@9 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1502_1_21: sx150x@21 {
+                               compatible = "semtech,sx1502q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1501-1-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1503 on I2C#0 at slave addr 0x20
+       fragment@10 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1503_0_20: sx150x@20 {
+                               compatible = "semtech,sx1503q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1503-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1503 on I2C#1 at slave addr 0x20
+       fragment@11 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1503_1_20: sx150x@20 {
+                               compatible = "semtech,sx1503q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1503-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1504 on I2C#0 at slave addr 0x20
+       fragment@12 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1504_0_20: sx150x@20 {
+                               compatible = "semtech,sx1504q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1504-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1504 on I2C#1 at slave addr 0x20
+       fragment@13 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1504_1_20: sx150x@20 {
+                               compatible = "semtech,sx1504q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1504-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1504 on I2C#0 at slave addr 0x21
+       fragment@14 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1504_0_21: sx150x@21 {
+                               compatible = "semtech,sx1504q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1504-0-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1504 on I2C#1 at slave addr 0x21
+       fragment@15 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1504_1_21: sx150x@21 {
+                               compatible = "semtech,sx1504q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1504-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1505 on I2C#0 at slave addr 0x20
+       fragment@16 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1505_0_20: sx150x@20 {
+                               compatible = "semtech,sx1505q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1505-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1505 on I2C#1 at slave addr 0x20
+       fragment@17 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1505_1_20: sx150x@20 {
+                               compatible = "semtech,sx1505q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1505-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1505 on I2C#0 at slave addr 0x21
+       fragment@18 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1505_0_21: sx150x@21 {
+                               compatible = "semtech,sx1505q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1505-0-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1505 on I2C#1 at slave addr 0x21
+       fragment@19 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1505_1_21: sx150x@21 {
+                               compatible = "semtech,sx1505q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1505-1-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1506 on I2C#0 at slave addr 0x20
+       fragment@20 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1506_0_20: sx150x@20 {
+                               compatible = "semtech,sx1506q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1506-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1506 on I2C#1 at slave addr 0x20
+       fragment@21 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1506_1_20: sx150x@20 {
+                               compatible = "semtech,sx1506q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1506-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#0 at slave addr 0x3E
+       fragment@22 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_0_3E: sx150x@3E {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x3E>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507_0_3E-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#1 at slave addr 0x3E
+       fragment@23 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_1_3E: sx150x@3E {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x3E>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507_1_3E-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#0 at slave addr 0x3F
+       fragment@24 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_0_3F: sx150x@3F {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x3F>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507_0_3F-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#1 at slave addr 0x3F
+       fragment@25 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_1_3F: sx150x@3F {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x3F>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507_1_3F-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#0 at slave addr 0x70
+       fragment@26 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_0_70: sx150x@70 {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x70>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507-0-70-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#1 at slave addr 0x70
+       fragment@27 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_1_70: sx150x@70 {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x70>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507-1-70-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#0 at slave addr 0x71
+       fragment@28 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_0_71: sx150x@71 {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x71>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507-0-71-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1507 on I2C#1 at slave addr 0x71
+       fragment@29 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1507_1_71: sx150x@71 {
+                               compatible = "semtech,sx1507q";
+                               reg = <0x71>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1507-1-71-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#0 at slave addr 0x20
+       fragment@30 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_0_20: sx150x@20 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-0-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#1 at slave addr 0x20
+       fragment@31 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_1_20: sx150x@20 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x20>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-1-20-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#0 at slave addr 0x21
+       fragment@32 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_0_21: sx150x@21 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-0-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#1 at slave addr 0x21
+       fragment@33 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_1_21: sx150x@21 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x21>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-1-21-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#0 at slave addr 0x22
+       fragment@34 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_0_22: sx150x@22 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x22>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-0-22-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#1 at slave addr 0x22
+       fragment@35 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_1_22: sx150x@22 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x22>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-1-22-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#0 at slave addr 0x23
+       fragment@36 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_0_23: sx150x@23 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x23>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-0-23-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1508 on I2C#1 at slave addr 0x23
+       fragment@37 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1508_1_23: sx150x@23 {
+                               compatible = "semtech,sx1508q";
+                               reg = <0x23>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1508-1-23-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#0 at slave addr 0x3E
+       fragment@38 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_0_3E: sx150x@3E {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x3E>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509_0_3E-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#1 at slave addr 0x3E
+       fragment@39 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_1_3E: sx150x@3E {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x3E>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509_1_3E-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#0 at slave addr 0x3F
+       fragment@40 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_0_3F: sx150x@3F {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x3F>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509_0_3F-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#1 at slave addr 0x3F
+       fragment@41 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_1_3F: sx150x@3F {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x3F>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509_1_3F-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#0 at slave addr 0x70
+       fragment@42 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_0_70: sx150x@70 {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x70>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509-0-70-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#1 at slave addr 0x70
+       fragment@43 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_1_70: sx150x@70 {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x70>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509-1-70-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#0 at slave addr 0x71
+       fragment@44 {
+               target = <&i2c0>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_0_71: sx150x@71 {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x71>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509-0-71-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable a SX1509 on I2C#1 at slave addr 0x71
+       fragment@45 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       sx1509_1_71: sx150x@71 {
+                               compatible = "semtech,sx1509q";
+                               reg = <0x71>;
+                               gpio-controller;
+                               #gpio-cells = <2>;
+                               #interrupt-cells = <2>;
+                               interrupts = <25 2>; /* 1st word overwritten by sx1509-1-71-int-gpio parameter
+                                                       2nd word is 2 for falling-edge triggered */
+                               status = "okay";
+                       };
+               };
+       };
+
+       // Enable interrupts for a SX1501 on I2C#0 at slave addr 0x20
+       fragment@46 {
+               target = <&sx1501_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1501 on I2C#1 at slave addr 0x20
+       fragment@47 {
+               target = <&sx1501_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1501 on I2C#0 at slave addr 0x21
+       fragment@48 {
+               target = <&sx1501_0_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1501 on I2C#1 at slave addr 0x21
+       fragment@49 {
+               target = <&sx1501_1_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1502 on I2C#0 at slave addr 0x20
+       fragment@50 {
+               target = <&sx1502_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1502 on I2C#1 at slave addr 0x20
+       fragment@51 {
+               target = <&sx1502_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1502 on I2C#0 at slave addr 0x21
+       fragment@52 {
+               target = <&sx1502_0_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1502 on I2C#1 at slave addr 0x21
+       fragment@53 {
+               target = <&sx1502_1_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1503 on I2C#0 at slave addr 0x20
+       fragment@54 {
+               target = <&sx1503_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1503 on I2C#1 at slave addr 0x20
+       fragment@55 {
+               target = <&sx1503_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1504 on I2C#0 at slave addr 0x20
+       fragment@56 {
+               target = <&sx1504_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1504 on I2C#1 at slave addr 0x20
+       fragment@57 {
+               target = <&sx1504_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1504 on I2C#0 at slave addr 0x21
+       fragment@58 {
+               target = <&sx1504_0_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1504 on I2C#1 at slave addr 0x21
+       fragment@59 {
+               target = <&sx1504_1_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1505 on I2C#0 at slave addr 0x20
+       fragment@60 {
+               target = <&sx1505_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1505 on I2C#1 at slave addr 0x20
+       fragment@61 {
+               target = <&sx1505_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1505 on I2C#0 at slave addr 0x21
+       fragment@62 {
+               target = <&sx1505_0_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1505 on I2C#1 at slave addr 0x21
+       fragment@63 {
+               target = <&sx1505_1_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1506 on I2C#0 at slave addr 0x20
+       fragment@64 {
+               target = <&sx1506_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1506 on I2C#1 at slave addr 0x20
+       fragment@65 {
+               target = <&sx1506_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#0 at slave addr 0x3E
+       fragment@66 {
+               target = <&sx1507_0_3E>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_3E_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#1 at slave addr 0x3E
+       fragment@67 {
+               target = <&sx1507_1_3E>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_3E_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#0 at slave addr 0x3F
+       fragment@68 {
+               target = <&sx1507_0_3F>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_3F_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#1 at slave addr 0x3F
+       fragment@69 {
+               target = <&sx1507_1_3F>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_3F_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#0 at slave addr 0x70
+       fragment@70 {
+               target = <&sx1507_0_70>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_70_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#1 at slave addr 0x70
+       fragment@71 {
+               target = <&sx1507_1_70>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_70_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#0 at slave addr 0x71
+       fragment@72 {
+               target = <&sx1507_0_71>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_71_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1507 on I2C#1 at slave addr 0x71
+       fragment@73 {
+               target = <&sx1507_1_71>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_71_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#0 at slave addr 0x20
+       fragment@74 {
+               target = <&sx1508_0_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#1 at slave addr 0x20
+       fragment@75 {
+               target = <&sx1508_1_20>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_20_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#0 at slave addr 0x21
+       fragment@76 {
+               target = <&sx1508_0_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#1 at slave addr 0x21
+       fragment@77 {
+               target = <&sx1508_1_21>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_21_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#0 at slave addr 0x22
+       fragment@78 {
+               target = <&sx1508_0_22>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_22_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#1 at slave addr 0x22
+       fragment@79 {
+               target = <&sx1508_1_22>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_22_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#0 at slave addr 0x23
+       fragment@80 {
+               target = <&sx1508_0_23>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_23_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1508 on I2C#1 at slave addr 0x23
+       fragment@81 {
+               target = <&sx1508_1_23>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_23_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#0 at slave addr 0x3E
+       fragment@82 {
+               target = <&sx1509_0_3E>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_3E_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#1 at slave addr 0x3E
+       fragment@83 {
+               target = <&sx1509_1_3E>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_3E_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#0 at slave addr 0x3F
+       fragment@84 {
+               target = <&sx1509_0_3F>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_3F_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#1 at slave addr 0x3F
+       fragment@85 {
+               target = <&sx1509_1_3F>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_3F_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#0 at slave addr 0x70
+       fragment@86 {
+               target = <&sx1509_0_70>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_70_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#1 at slave addr 0x70
+       fragment@87 {
+               target = <&sx1509_1_70>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_70_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#0 at slave addr 0x71
+       fragment@88 {
+               target = <&sx1509_0_71>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_0_71_pins>;
+               };
+       };
+
+       // Enable interrupts for a SX1509 on I2C#1 at slave addr 0x71
+       fragment@89 {
+               target = <&sx1509_1_71>;
+               __dormant__ {
+                       interrupt-parent = <&gpio>;
+                       interrupt-controller;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&sx150x_1_71_pins>;
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x20
+        // Configure as a input with no pull-up/down
+       fragment@90 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_20_pins: sx150x_0_20_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-20-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x20
+        // Configure as a input with no pull-up/down
+       fragment@91 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_20_pins: sx150x_1_20_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-20-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x21
+        // Configure as a input with no pull-up/down
+       fragment@92 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_21_pins: sx150x_0_21_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-21-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x21
+        // Configure as a input with no pull-up/down
+       fragment@93 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_21_pins: sx150x_1_21_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-21-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x22
+        // Configure as a input with no pull-up/down
+       fragment@94 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_22_pins: sx150x_0_22_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-22-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x22
+        // Configure as a input with no pull-up/down
+       fragment@95 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_22_pins: sx150x_1_22_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-22-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x23
+        // Configure as a input with no pull-up/down
+       fragment@96 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_23_pins: sx150x_0_23_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-23-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x23
+        // Configure as a input with no pull-up/down
+       fragment@97 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_23_pins: sx150x_1_23_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-23-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x3E
+        // Configure as a input with no pull-up/down
+       fragment@98 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_3E_pins: sx150x_0_3E_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-3E-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x3E
+        // Configure as a input with no pull-up/down
+       fragment@99 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_3E_pins: sx150x_1_3E_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-3E-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x3F
+        // Configure as a input with no pull-up/down
+       fragment@100 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_3F_pins: sx150x_0_3F_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-3F-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x3F
+        // Configure as a input with no pull-up/down
+       fragment@101 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_3F_pins: sx150x_1_3F_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-3F-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x70
+        // Configure as a input with no pull-up/down
+       fragment@102 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_70_pins: sx150x_0_70_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-70-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x70
+        // Configure as a input with no pull-up/down
+       fragment@103 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_70_pins: sx150x_1_70_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-70-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#0 interface at slave addr 0x71
+        // Configure as a input with no pull-up/down
+       fragment@104 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_0_71_pins: sx150x_0_71_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-0-71-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       // Configure GPIO pin connected to NINT output of a SX150x on I2C#1 interface at slave addr 0x71
+        // Configure as a input with no pull-up/down
+       fragment@105 {
+               target = <&gpio>;
+               __dormant__ {
+                       sx150x_1_71_pins: sx150x_1_71_pins {
+                               brcm,pins = <0>;  /* overwritten by sx150x-1-71-int-gpio parameter */
+                               brcm,function = <0>;
+                               brcm,pull = <0>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               sx1501-0-20          = <0>,"+0+2";
+               sx1501-1-20          = <0>,"+1+3";
+               sx1501-0-21          = <0>,"+0+4";
+               sx1501-1-21          = <0>,"+1+5";
+               sx1502-0-20          = <0>,"+0+6";
+               sx1502-1-20          = <0>,"+1+7";
+               sx1502-0-21          = <0>,"+0+8";
+               sx1502-1-21          = <0>,"+1+9";
+               sx1503-0-20          = <0>,"+0+10";
+               sx1503-1-20          = <0>,"+1+11";
+               sx1504-0-20          = <0>,"+0+12";
+               sx1504-1-20          = <0>,"+1+13";
+               sx1504-0-21          = <0>,"+0+14";
+               sx1504-1-21          = <0>,"+1+15";
+               sx1505-0-20          = <0>,"+0+16";
+               sx1505-1-20          = <0>,"+1+17";
+               sx1505-0-21          = <0>,"+0+18";
+               sx1505-1-21          = <0>,"+1+19";
+               sx1506-0-20          = <0>,"+0+20";
+               sx1506-1-20          = <0>,"+1+21";
+               sx1507-0-3E          = <0>,"+0+22";
+               sx1507-1-3E          = <0>,"+1+23";
+               sx1507-0-3F          = <0>,"+0+24";
+               sx1507-1-3F          = <0>,"+1+25";
+               sx1507-0-70          = <0>,"+0+26";
+               sx1507-1-70          = <0>,"+1+27";
+               sx1507-0-71          = <0>,"+0+28";
+               sx1507-1-71          = <0>,"+1+29";
+               sx1508-0-20          = <0>,"+0+30";
+               sx1508-1-20          = <0>,"+1+31";
+               sx1508-0-21          = <0>,"+0+32";
+               sx1508-1-21          = <0>,"+1+33";
+               sx1508-0-22          = <0>,"+0+34";
+               sx1508-1-22          = <0>,"+1+35";
+               sx1508-0-23          = <0>,"+0+36";
+               sx1508-1-23          = <0>,"+1+37";
+               sx1509-0-3E          = <0>,"+0+38";
+               sx1509-1-3E          = <0>,"+1+39";
+               sx1509-0-3F          = <0>,"+0+40";
+               sx1509-1-3F          = <0>,"+1+41";
+               sx1509-0-70          = <0>,"+0+42";
+               sx1509-1-70          = <0>,"+1+43";
+               sx1509-0-71          = <0>,"+0+44";
+               sx1509-1-71          = <0>,"+1+45";
+               sx1501-0-20-int-gpio = <0>,"+46+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1501_0_20>,"interrupts:0";
+               sx1501-1-20-int-gpio = <0>,"+47+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1501_1_20>,"interrupts:0";
+               sx1501-0-21-int-gpio = <0>,"+48+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1501_0_21>,"interrupts:0";
+               sx1501-1-21-int-gpio = <0>,"+49+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1501_1_21>,"interrupts:0";
+               sx1502-0-20-int-gpio = <0>,"+50+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1502_0_20>,"interrupts:0";
+               sx1502-1-20-int-gpio = <0>,"+51+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1502_1_20>,"interrupts:0";
+               sx1502-0-21-int-gpio = <0>,"+52+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1502_0_21>,"interrupts:0";
+               sx1502-1-21-int-gpio = <0>,"+53+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1502_1_21>,"interrupts:0";
+               sx1503-0-20-int-gpio = <0>,"+54+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1503_0_20>,"interrupts:0";
+               sx1503-1-20-int-gpio = <0>,"+55+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1503_1_20>,"interrupts:0";
+               sx1504-0-20-int-gpio = <0>,"+56+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1504_0_20>,"interrupts:0";
+               sx1504-1-20-int-gpio = <0>,"+57+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1504_1_20>,"interrupts:0";
+               sx1504-0-21-int-gpio = <0>,"+58+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1504_0_21>,"interrupts:0";
+               sx1504-1-21-int-gpio = <0>,"+59+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1504_1_21>,"interrupts:0";
+               sx1505-0-20-int-gpio = <0>,"+60+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1505_0_20>,"interrupts:0";
+               sx1505-1-20-int-gpio = <0>,"+61+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1505_1_20>,"interrupts:0";
+               sx1505-0-21-int-gpio = <0>,"+62+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1505_0_21>,"interrupts:0";
+               sx1505-1-21-int-gpio = <0>,"+63+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1505_1_21>,"interrupts:0";
+               sx1506-0-20-int-gpio = <0>,"+64+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1506_0_20>,"interrupts:0";
+               sx1506-1-20-int-gpio = <0>,"+65+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1506_1_20>,"interrupts:0";
+               sx1507-0-3E-int-gpio = <0>,"+66+98",  <&sx150x_0_3E_pins>,"brcm,pins:0", <&sx1507_0_3E>,"interrupts:0";
+               sx1507-1-3E-int-gpio = <0>,"+67+99",  <&sx150x_1_3E_pins>,"brcm,pins:0", <&sx1507_1_3E>,"interrupts:0";
+               sx1507-0-3F-int-gpio = <0>,"+68+100", <&sx150x_0_3F_pins>,"brcm,pins:0", <&sx1507_0_3F>,"interrupts:0";
+               sx1507-1-3F-int-gpio = <0>,"+69+101", <&sx150x_1_3F_pins>,"brcm,pins:0", <&sx1507_1_3F>,"interrupts:0";
+               sx1507-0-70-int-gpio = <0>,"+60+102", <&sx150x_0_70_pins>,"brcm,pins:0", <&sx1507_0_70>,"interrupts:0";
+               sx1507-1-70-int-gpio = <0>,"+71+103", <&sx150x_1_70_pins>,"brcm,pins:0", <&sx1507_1_70>,"interrupts:0";
+               sx1507-0-71-int-gpio = <0>,"+72+104", <&sx150x_0_71_pins>,"brcm,pins:0", <&sx1507_0_71>,"interrupts:0";
+               sx1507-1-71-int-gpio = <0>,"+73+105", <&sx150x_1_71_pins>,"brcm,pins:0", <&sx1507_1_71>,"interrupts:0";
+               sx1508-0-20-int-gpio = <0>,"+74+90",  <&sx150x_0_20_pins>,"brcm,pins:0", <&sx1508_0_20>,"interrupts:0";
+               sx1508-1-20-int-gpio = <0>,"+75+91",  <&sx150x_1_20_pins>,"brcm,pins:0", <&sx1508_1_20>,"interrupts:0";
+               sx1508-0-21-int-gpio = <0>,"+76+92",  <&sx150x_0_21_pins>,"brcm,pins:0", <&sx1508_0_21>,"interrupts:0";
+               sx1508-1-21-int-gpio = <0>,"+77+93",  <&sx150x_1_21_pins>,"brcm,pins:0", <&sx1508_1_21>,"interrupts:0";
+               sx1508-0-22-int-gpio = <0>,"+78+94",  <&sx150x_0_22_pins>,"brcm,pins:0", <&sx1508_0_22>,"interrupts:0";
+               sx1508-1-22-int-gpio = <0>,"+79+95",  <&sx150x_1_22_pins>,"brcm,pins:0", <&sx1508_1_22>,"interrupts:0";
+               sx1508-0-23-int-gpio = <0>,"+80+96",  <&sx150x_0_23_pins>,"brcm,pins:0", <&sx1508_0_23>,"interrupts:0";
+               sx1508-1-23-int-gpio = <0>,"+81+97",  <&sx150x_1_23_pins>,"brcm,pins:0", <&sx1508_1_23>,"interrupts:0";
+               sx1509-0-3E-int-gpio = <0>,"+82+98",  <&sx150x_0_3E_pins>,"brcm,pins:0", <&sx1509_0_3E>,"interrupts:0";
+               sx1509-1-3E-int-gpio = <0>,"+83+99",  <&sx150x_1_3E_pins>,"brcm,pins:0", <&sx1509_1_3E>,"interrupts:0";
+               sx1509-0-3F-int-gpio = <0>,"+84+100", <&sx150x_0_3F_pins>,"brcm,pins:0", <&sx1509_0_3F>,"interrupts:0";
+               sx1509-1-3F-int-gpio = <0>,"+85+101", <&sx150x_1_3F_pins>,"brcm,pins:0", <&sx1509_1_3F>,"interrupts:0";
+               sx1509-0-70-int-gpio = <0>,"+86+102", <&sx150x_0_70_pins>,"brcm,pins:0", <&sx1509_0_70>,"interrupts:0";
+               sx1509-1-70-int-gpio = <0>,"+87+103", <&sx150x_1_70_pins>,"brcm,pins:0", <&sx1509_1_70>,"interrupts:0";
+               sx1509-0-71-int-gpio = <0>,"+88+104", <&sx150x_0_71_pins>,"brcm,pins:0", <&sx1509_0_71>,"interrupts:0";
+               sx1509-1-71-int-gpio = <0>,"+89+105", <&sx150x_1_71_pins>,"brcm,pins:0", <&sx1509_1_71>,"interrupts:0";
+       };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/tinylcd35-overlay.dts
@@ -0,0 +1,224 @@
+/*
+ * tinylcd35-overlay.dts
+ *
+ * -------------------------------------------------
+ * www.tinlylcd.com
+ * -------------------------------------------------
+ * Device---Driver-----BUS       GPIO's
+ * display  tinylcd35  spi0.0    25 24 18
+ * touch    ads7846    spi0.1    5
+ * rtc      ds1307     i2c1-0068
+ * rtc      pcf8563    i2c1-0051
+ * keypad   gpio-keys  --------- 17 22 27 23 28
+ *
+ *
+ * TinyLCD.com 3.5 inch TFT
+ *
+ *  Version 001
+ *  5/3/2015  -- Noralf Trønnes     Initial Device tree framework
+ *  10/3/2015 -- tinylcd@gmail.com  added ds1307 support.
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&spi0>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&spidev0>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@2 {
+               target = <&spidev1>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+
+       fragment@3 {
+               target = <&gpio>;
+               __overlay__ {
+                       tinylcd35_pins: tinylcd35_pins {
+                               brcm,pins = <25 24 18>;
+                               brcm,function = <1>; /* out */
+                       };
+                       tinylcd35_ts_pins: tinylcd35_ts_pins {
+                               brcm,pins = <5>;
+                               brcm,function = <0>; /* in */
+                       };
+                       keypad_pins: keypad_pins {
+                               brcm,pins = <4 17 22 23 27>;
+                               brcm,function = <0>; /* in */
+                               brcm,pull = <1>; /* down */
+                       };
+               };
+       };
+
+       fragment@4 {
+               target = <&spi0>;
+               __overlay__ {
+                       /* needed to avoid dtc warning */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       tinylcd35: tinylcd35@0{
+                               compatible = "neosec,tinylcd";
+                               reg = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&tinylcd35_pins>,
+                                           <&tinylcd35_ts_pins>;
+
+                               spi-max-frequency = <48000000>;
+                               rotate = <270>;
+                               fps = <20>;
+                               bgr;
+                               buswidth = <8>;
+                               reset-gpios = <&gpio 25 0>;
+                               dc-gpios = <&gpio 24 0>;
+                               led-gpios = <&gpio 18 1>;
+                               debug = <0>;
+
+                               init = <0x10000B0 0x80
+                                       0x10000C0 0x0A 0x0A
+                                       0x10000C1 0x01 0x01
+                                       0x10000C2 0x33
+                                       0x10000C5 0x00 0x42 0x80
+                                       0x10000B1 0xD0 0x11
+                                       0x10000B4 0x02
+                                       0x10000B6 0x00 0x22 0x3B
+                                       0x10000B7 0x07
+                                       0x1000036 0x58
+                                       0x10000F0 0x36 0xA5 0xD3
+                                       0x10000E5 0x80
+                                       0x10000E5 0x01
+                                       0x10000B3 0x00
+                                       0x10000E5 0x00
+                                       0x10000F0 0x36 0xA5 0x53
+                                       0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
+                                       0x100003A 0x55
+                                       0x1000011
+                                       0x2000001
+                                       0x1000029>;
+                       };
+
+                       tinylcd35_ts: tinylcd35_ts@1 {
+                               compatible = "ti,ads7846";
+                               reg = <1>;
+                               status = "disabled";
+
+                               spi-max-frequency = <2000000>;
+                               interrupts = <5 2>; /* high-to-low edge triggered */
+                               interrupt-parent = <&gpio>;
+                               pendown-gpio = <&gpio 5 0>;
+                               ti,x-plate-ohms = /bits/ 16 <100>;
+                               ti,pressure-max = /bits/ 16 <255>;
+                       };
+               };
+       };
+
+       /*  RTC    */
+
+       fragment@5 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       pcf8563: pcf8563@51 {
+                               compatible = "nxp,pcf8563";
+                               reg = <0x51>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@6 {
+               target = <&i2c1>;
+               __dormant__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       status = "okay";
+
+                       ds1307: ds1307@68 {
+                               compatible = "maxim,ds1307";
+                               reg = <0x68>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       /*
+        * Values for input event code is found under the
+        * 'Keys and buttons' heading in include/uapi/linux/input.h
+        */
+       fragment@7 {
+               target-path = "/soc";
+               __overlay__ {
+                       keypad: keypad {
+                               compatible = "gpio-keys";
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&keypad_pins>;
+                               status = "disabled";
+                               autorepeat;
+
+                               button@17 {
+                                       label = "GPIO KEY_UP";
+                                       linux,code = <103>;
+                                       gpios = <&gpio 17 0>;
+                               };
+                               button@22 {
+                                       label = "GPIO KEY_DOWN";
+                                       linux,code = <108>;
+                                       gpios = <&gpio 22 0>;
+                               };
+                               button@27 {
+                                       label = "GPIO KEY_LEFT";
+                                       linux,code = <105>;
+                                       gpios = <&gpio 27 0>;
+                               };
+                               button@23 {
+                                       label = "GPIO KEY_RIGHT";
+                                       linux,code = <106>;
+                                       gpios = <&gpio 23 0>;
+                               };
+                               button@4 {
+                                       label = "GPIO KEY_ENTER";
+                                       linux,code = <28>;
+                                       gpios = <&gpio 4 0>;
+                               };
+                       };
+               };
+       };
+
+       __overrides__ {
+               speed =      <&tinylcd35>,"spi-max-frequency:0";
+               rotate =     <&tinylcd35>,"rotate:0";
+               fps =        <&tinylcd35>,"fps:0";
+               debug =      <&tinylcd35>,"debug:0";
+               touch =      <&tinylcd35_ts>,"status";
+               touchgpio =  <&tinylcd35_ts_pins>,"brcm,pins:0",
+                            <&tinylcd35_ts>,"interrupts:0",
+                            <&tinylcd35_ts>,"pendown-gpio:4";
+               xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
+               rtc-pcf =    <0>,"=5";
+               rtc-ds =     <0>,"=6";
+               keypad =     <&keypad>,"status";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/uart0-overlay.dts
@@ -0,0 +1,32 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&uart0>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&uart0_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       uart0_pins: uart0_pins {
+                               brcm,pins = <14 15>;
+                               brcm,function = <4>; /* alt0 */
+                               brcm,pull = <0 2>;
+                       };
+               };
+       };
+
+       __overrides__ {
+               txd0_pin = <&uart0_pins>,"brcm,pins:0";
+               rxd0_pin = <&uart0_pins>,"brcm,pins:4";
+               pin_func = <&uart0_pins>,"brcm,function:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/uart1-overlay.dts
@@ -0,0 +1,38 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target = <&uart1>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&uart1_pins>;
+                       status = "okay";
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       uart1_pins: uart1_pins {
+                               brcm,pins = <14 15>;
+                               brcm,function = <2>; /* alt5 */
+                               brcm,pull = <0 2>;
+                       };
+               };
+       };
+
+       fragment@2 {
+               target-path = "/chosen";
+               __overlay__ {
+                       bootargs = "8250.nr_uarts=1";
+               };
+       };
+
+       __overrides__ {
+               txd1_pin = <&uart1_pins>,"brcm,pins:0";
+               rxd1_pin = <&uart1_pins>,"brcm,pins:4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/upstream-aux-interrupt-overlay.dts
@@ -0,0 +1,33 @@
+// Overlay for missing AUX interrupt controller
+// Instead we bind all AUX devices to the generic AUX interrupt line
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+
+    fragment@0 {
+        target = <&uart1>;
+        __overlay__ {
+            interrupt-parent = <&intc>;
+            interrupts = <0x1 0x1d>;
+        };
+    };
+
+    fragment@1 {
+        target = <&spi1>;
+        __overlay__ {
+            interrupt-parent = <&intc>;
+            interrupts = <0x1 0x1d>;
+        };
+    };
+
+    fragment@2 {
+        target = <&spi2>;
+        __overlay__ {
+            interrupt-parent = <&intc>;
+            interrupts = <0x1 0x1d>;
+        };
+    };
+};
+
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/upstream-overlay.dts
@@ -0,0 +1,154 @@
+// redo: ovmerge -c vc4-kms-v3d-overlay.dts,cma-96 dwc2-overlay.dts,dr_mode=otg upstream-aux-interrupt-overlay.dts,
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/bcm2835.h>
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+       fragment@0 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=256M";
+               };
+       };
+       fragment@1 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=192M";
+               };
+       };
+       fragment@2 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=128M";
+               };
+       };
+       fragment@3 {
+               target-path = "/chosen";
+               __overlay__ {
+                       bootargs = "cma=96M";
+               };
+       };
+       fragment@4 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=64M";
+               };
+       };
+       fragment@5 {
+               target = <&i2c2>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+       fragment@6 {
+               target = <&fb>;
+               __overlay__ {
+                       status = "disabled";
+               };
+       };
+       fragment@7 {
+               target = <&pixelvalve0>;
+               __overlay__ {
+                       interrupts = <2 13>;
+                       status = "okay";
+               };
+       };
+       fragment@8 {
+               target = <&pixelvalve1>;
+               __overlay__ {
+                       interrupts = <2 14>;
+                       status = "okay";
+               };
+       };
+       fragment@9 {
+               target = <&pixelvalve2>;
+               __overlay__ {
+                       interrupts = <2 10>;
+                       status = "okay";
+               };
+       };
+       fragment@10 {
+               target = <&hvs>;
+               __overlay__ {
+                       interrupts = <2 1>;
+                       status = "okay";
+               };
+       };
+       fragment@11 {
+               target = <&hdmi>;
+               __overlay__ {
+                       interrupts = <2 8>, <2 9>;
+                       status = "okay";
+               };
+       };
+       fragment@12 {
+               target = <&v3d>;
+               __overlay__ {
+                       interrupts = <1 10>;
+                       status = "okay";
+               };
+       };
+       fragment@13 {
+               target = <&vc4>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+       fragment@14 {
+               target-path = "/soc/dma";
+               __overlay__ {
+                       brcm,dma-channel-mask = <0x7f35>;
+               };
+       };
+       fragment@15 {
+               target = <&clocks>;
+               __overlay__ {
+                       claim-clocks = <BCM2835_PLLD_DSI0 BCM2835_PLLD_DSI1 BCM2835_PLLH_AUX BCM2835_PLLH_PIX>;
+               };
+       };
+       fragment@16 {
+               target = <&vec>;
+               __overlay__ {
+                       status = "okay";
+               };
+       };
+       fragment@17 {
+               target = <&usb>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               dwc2_usb: __overlay__ {
+                       compatible = "brcm,bcm2835-usb";
+                       reg = <0x7e980000 0x10000>;
+                       interrupts = <1 9>;
+                       dr_mode = "otg";
+                       g-np-tx-fifo-size = <32>;
+                       g-rx-fifo-size = <256>;
+                       g-tx-fifo-size = <512 512 512 512 512 256 256>;
+                       status = "okay";
+               };
+       };
+       fragment@18 {
+               target = <&uart1>;
+               __overlay__ {
+                       interrupt-parent = <&intc>;
+                       interrupts = <0x1 0x1d>;
+               };
+       };
+       fragment@19 {
+               target = <&spi1>;
+               __overlay__ {
+                       interrupt-parent = <&intc>;
+                       interrupts = <0x1 0x1d>;
+               };
+       };
+       fragment@20 {
+               target = <&spi2>;
+               __overlay__ {
+                       interrupt-parent = <&intc>;
+                       interrupts = <0x1 0x1d>;
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/vc4-fkms-v3d-overlay.dts
@@ -0,0 +1,89 @@
+/*
+ * vc4-fkms-v3d-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target-path = "/chosen";
+               __overlay__ {
+                       bootargs = "cma=256M";
+               };
+       };
+
+       fragment@1 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=192M";
+               };
+       };
+
+       fragment@2 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=128M";
+               };
+       };
+
+       fragment@3 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=96M";
+               };
+       };
+
+       fragment@4 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=64M";
+               };
+       };
+
+       fragment@5 {
+               target = <&fb>;
+               __overlay__  {
+                       status = "disabled";
+               };
+       };
+
+       fragment@6 {
+               target = <&firmwarekms>;
+               __overlay__  {
+                       status = "okay";
+               };
+       };
+
+       fragment@7 {
+               target = <&v3d>;
+               __overlay__  {
+                       interrupts = <1 10>;
+                       status = "okay";
+               };
+       };
+
+       fragment@8 {
+               target = <&vc4>;
+               __overlay__  {
+                       status = "okay";
+               };
+       };
+
+       fragment@9 {
+               target-path = "/soc/dma";
+               __overlay__ {
+                       brcm,dma-channel-mask = <0x7f35>;
+               };
+       };
+
+       __overrides__ {
+               cma-256 = <0>,"+0-1-2-3-4";
+               cma-192 = <0>,"-0+1-2-3-4";
+               cma-128 = <0>,"-0-1+2-3-4";
+               cma-96  = <0>,"-0-1-2+3-4";
+               cma-64  = <0>,"-0-1-2-3+4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/vc4-kms-v3d-overlay.dts
@@ -0,0 +1,151 @@
+/*
+ * vc4-kms-v3d-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/bcm2835.h>
+
+/ {
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target-path = "/chosen";
+               __overlay__ {
+                       bootargs = "cma=256M";
+               };
+       };
+
+       fragment@1 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=192M";
+               };
+       };
+
+       fragment@2 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=128M";
+               };
+       };
+
+       fragment@3 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=96M";
+               };
+       };
+
+       fragment@4 {
+               target-path = "/chosen";
+               __dormant__ {
+                       bootargs = "cma=64M";
+               };
+       };
+
+       fragment@5 {
+               target = <&i2c2>;
+               __overlay__  {
+                       status = "okay";
+               };
+       };
+
+       fragment@6 {
+               target = <&fb>;
+               __overlay__  {
+                       status = "disabled";
+               };
+       };
+
+       fragment@7 {
+               target = <&pixelvalve0>;
+               __overlay__  {
+                       interrupts = <2 13>; /* pwa0 */
+                       status = "okay";
+               };
+       };
+
+       fragment@8 {
+               target = <&pixelvalve1>;
+               __overlay__  {
+                       interrupts = <2 14>; /* pwa1 */
+                       status = "okay";
+               };
+       };
+
+       fragment@9 {
+               target = <&pixelvalve2>;
+               __overlay__  {
+                       interrupts = <2 10>; /* pixelvalve */
+                       status = "okay";
+               };
+       };
+
+       fragment@10 {
+               target = <&hvs>;
+               __overlay__  {
+                       interrupts = <2 1>;
+                       status = "okay";
+               };
+       };
+
+       fragment@11 {
+               target = <&hdmi>;
+               __overlay__  {
+                       interrupts = <2 8>, <2 9>;
+                       status = "okay";
+               };
+       };
+
+       fragment@12 {
+               target = <&v3d>;
+               __overlay__  {
+                       interrupts = <1 10>;
+                       status = "okay";
+               };
+       };
+
+       fragment@13 {
+               target = <&vc4>;
+               __overlay__  {
+                       status = "okay";
+               };
+       };
+
+       fragment@14 {
+               target-path = "/soc/dma";
+               __overlay__ {
+                       brcm,dma-channel-mask = <0x7f35>;
+               };
+       };
+
+
+       fragment@15 {
+               target = <&clocks>;
+               __overlay__  {
+                       claim-clocks = <
+                               BCM2835_PLLD_DSI0
+                               BCM2835_PLLD_DSI1
+                               BCM2835_PLLH_AUX
+                               BCM2835_PLLH_PIX
+                       >;
+               };
+       };
+
+       fragment@16 {
+               target = <&vec>;
+               __overlay__  {
+                       status = "okay";
+               };
+       };
+
+       __overrides__ {
+               cma-256 = <0>,"+0-1-2-3-4";
+               cma-192 = <0>,"-0+1-2-3-4";
+               cma-128 = <0>,"-0-1+2-3-4";
+               cma-96  = <0>,"-0-1-2+3-4";
+               cma-64  = <0>,"-0-1-2-3+4";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/vga666-overlay.dts
@@ -0,0 +1,30 @@
+/dts-v1/;
+/plugin/;
+
+/{
+       compatible = "brcm,bcm2708";
+
+       // There is no VGA driver module, but we need a platform device
+       // node (that doesn't already use pinctrl) to hang the pinctrl
+       // reference on - leds will do
+
+       fragment@0 {
+               target = <&leds>;
+               __overlay__ {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&vga666_pins>;
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       vga666_pins: vga666_pins {
+                               brcm,pins = <2 3 4 5 6 7 8 9 10 11 12
+                                            13 14 15 16 17 18 19 20 21>;
+                               brcm,function = <6>; /* alt2 */
+                               brcm,pull = <0>; /* no pull */
+                       };
+               };
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/w1-gpio-overlay.dts
@@ -0,0 +1,41 @@
+// Definitions for w1-gpio module (without external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+
+                       w1: onewire@0 {
+                               compatible = "w1-gpio";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&w1_pins>;
+                               gpios = <&gpio 4 0>;
+                               rpi,parasitic-power = <0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       w1_pins: w1_pins@0 {
+                               brcm,pins = <4>;
+                               brcm,function = <0>; // in (initially)
+                               brcm,pull = <0>; // off
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpiopin =       <&w1>,"gpios:4",
+                               <&w1>,"reg:0",
+                               <&w1_pins>,"brcm,pins:0",
+                               <&w1_pins>,"reg:0";
+               pullup =        <&w1>,"rpi,parasitic-power:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts
@@ -0,0 +1,43 @@
+// Definitions for w1-gpio module (with external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+       compatible = "brcm,bcm2708";
+
+       fragment@0 {
+               target-path = "/";
+               __overlay__ {
+
+                       w1: onewire@0 {
+                               compatible = "w1-gpio";
+                               pinctrl-names = "default";
+                               pinctrl-0 = <&w1_pins>;
+                               gpios = <&gpio 4 0>, <&gpio 5 1>;
+                               rpi,parasitic-power = <0>;
+                               status = "okay";
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&gpio>;
+               __overlay__ {
+                       w1_pins: w1_pins@0 {
+                               brcm,pins = <4 5>;
+                               brcm,function = <0 1>; // in out
+                               brcm,pull = <0 0>; // off off
+                       };
+               };
+       };
+
+       __overrides__ {
+               gpiopin =       <&w1>,"gpios:4",
+                               <&w1>,"reg:0",
+                               <&w1_pins>,"brcm,pins:0",
+                               <&w1_pins>,"reg:0";
+               extpullup =     <&w1>,"gpios:16",
+                               <&w1_pins>,"brcm,pins:4";
+               pullup =        <&w1>,"rpi,parasitic-power:0";
+       };
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/wittypi-overlay.dts
@@ -0,0 +1,44 @@
+/*
+ * Device Tree overlay for Witty Pi extension board by UUGear
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+
+       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+       fragment@0 {
+               target = <&leds>;
+               __overlay__ {
+                       compatible = "gpio-leds";
+                       wittypi_led: wittypi_led {
+                               label = "wittypi_led";
+                               linux,default-trigger = "default-on";
+                               gpios = <&gpio 17 0>;
+                       };
+               };
+       };
+
+       fragment@1 {
+               target = <&i2c1>;
+               __overlay__ {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+
+                       rtc: ds1337@68 {
+                               compatible = "dallas,ds1337";
+                               reg = <0x68>;
+                               wakeup-source;
+                       };
+               };
+       };
+
+       __overrides__ {
+               led_gpio =      <&wittypi_led>,"gpios:4";
+               led_trigger =   <&wittypi_led>,"linux,default-trigger";
+       };
+
+};
--- a/scripts/Makefile.dtbinst
+++ b/scripts/Makefile.dtbinst
@@ -20,6 +20,7 @@ include scripts/Kbuild.include
 include $(src)/Makefile
 
 dtbinst-files  := $(sort $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
+dtboinst-files := $(sort $(dtbo-y) $(if $(CONFIG_OF_ALL_DTBS), $(dtb-)))
 dtbinst-dirs   := $(subdir-y) $(subdir-m)
 
 # Helper targets for Installing DTBs into the boot directory
@@ -31,10 +32,13 @@ install-dir = $(patsubst $(dtbinst_root)
 $(dtbinst-files): %.dtb: $(obj)/%.dtb
        $(call cmd,dtb_install,$(install-dir))
 
+$(dtboinst-files): %.dtbo: $(obj)/%.dtbo
+       $(call cmd,dtb_install,$(install-dir))
+
 $(dtbinst-dirs):
        $(Q)$(MAKE) $(dtbinst)=$(obj)/$@
 
-PHONY += $(dtbinst-files) $(dtbinst-dirs)
-__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
+PHONY += $(dtbinst-files) $(dtboinst-files) $(dtbinst-dirs)
+__dtbs_install: $(dtbinst-files) $(dtboinst-files) $(dtbinst-dirs)
 
 .PHONY: $(PHONY)
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -248,6 +248,7 @@ DTC ?= $(objtree)/scripts/dtc/dtc
 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
 DTC_FLAGS += -Wno-unit_address_vs_reg \
        -Wno-unit_address_format \
+       -Wno-gpios_property \
        -Wno-avoid_unnecessary_addr_size \
        -Wno-alias_paths \
        -Wno-graph_child_address \
@@ -293,6 +294,18 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
        $(call if_changed_dep,dtc)
 
+quiet_cmd_dtco = DTCO    $@
+cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
+       $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+       $(DTC) -@ -H epapr -O dtb -o $@ -b 0 \
+               -i $(dir $<) $(DTC_FLAGS) \
+               -Wno-interrupts_property \
+               -d $(depfile).dtc.tmp $(dtc-tmp) ; \
+       cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+
+$(obj)/%.dtbo: $(src)/%-overlay.dts FORCE
+       $(call if_changed_dep,dtco)
+
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
 # Bzip2