brcm2708: update to latest patches from RPi Foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0253-overlays-Update-README-with-removal-of-lirc-rpi.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0253-overlays-Update-README-with-removal-of-lirc-rpi.patch b/target/linux/brcm2708/patches-4.19/950-0253-overlays-Update-README-with-removal-of-lirc-rpi.patch
new file mode 100644 (file)
index 0000000..0216212
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0253-overlays-Update-README-with-removal-of-lirc-rpi.patch
@@ -0,0 +1,91 @@
+From f2c24ce7e03d059fa9f674d8ebf6286e8f0c38b6 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 5 Dec 2018 11:56:40 +0000
+Subject: [PATCH] overlays: Update README with removal of lirc-rpi
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README | 57 ++++++++++++-------------------
+ 1 file changed, 21 insertions(+), 36 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -56,23 +56,29 @@ have its contents deleted (or commented
+ 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
++Overlays are loaded using the "dtoverlay" config.txt setting. As an example,
++consider I2C Real Time Clock drivers. In the pre-DT world these would be loaded
++by writing a magic string comprising a device identifier and an I2C address to
++a special file in /sys/class/i2c-adapter, having first loaded the driver for
++the I2C interface and the RTC device - something like this:
++
++    modprobe i2c-bcm2835
++    modprobe rtc-ds1307
++    echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
++
++With DT enabled, this becomes a line in config.txt:
++
++    dtoverlay=i2c-rtc,ds1307
++
++This causes the file /boot/overlays/i2c-rtc.dtbo to be loaded and a "node"
++describing the DS1307 I2C device to be added to the Device Tree for the Pi. By
++default it usees address 0x68, but this can be modified with an additional DT
++parameter:
++
++    dtoverlay=i2c-rtc,ds1307,addr=0x68
++
++Parameters usually have default values, although certain parameters are
++mandatory. See the list of overlays below for a description of the parameters
+ and their defaults.
+ 
+ The Overlay and Parameter Reference
+@@ -1135,29 +1141,8 @@ 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")
++Info:   This overlay has been deprecated and removed - see gpio-ir
++Load:   <Deprecated>
+ 
+ 
+ Name:   ltc294x