target/linux/bcm27xx/patches-4.19/950-0251-overlays-Update-README-with-removal-of-lirc-rpi.patch

   1 From f2c24ce7e03d059fa9f674d8ebf6286e8f0c38b6 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Wed, 5 Dec 2018 11:56:40 +0000
   4 Subject: [PATCH] overlays: Update README with removal of lirc-rpi
   5
   6 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
   7 ---
   8  arch/arm/boot/dts/overlays/README | 57 ++++++++++++-------------------
   9  1 file changed, 21 insertions(+), 36 deletions(-)
  10
  11 --- a/arch/arm/boot/dts/overlays/README
  12 +++ b/arch/arm/boot/dts/overlays/README
  13 @@ -56,23 +56,29 @@ have its contents deleted (or commented
  14  Using Overlays
  15  ==============
  16
  17 -Overlays are loaded using the "dtoverlay" directive. As an example, consider
  18 -the popular lirc-rpi module, the Linux Infrared Remote Control driver. In the
  19 -pre-DT world this would be loaded from /etc/modules, with an explicit
  20 -"modprobe lirc-rpi" command, or programmatically by lircd. With DT enabled,
  21 -this becomes a line in config.txt:
  22 -
  23 -    dtoverlay=lirc-rpi
  24 -
  25 -This causes the file /boot/overlays/lirc-rpi.dtbo to be loaded. By
  26 -default it will use GPIOs 17 (out) and 18 (in), but this can be modified using
  27 -DT parameters:
  28 -
  29 -    dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
  30 -
  31 -Parameters always have default values, although in some cases (e.g. "w1-gpio")
  32 -it is necessary to provided multiple overlays in order to get the desired
  33 -behaviour. See the list of overlays below for a description of the parameters
  34 +Overlays are loaded using the "dtoverlay" config.txt setting. As an example,
  35 +consider I2C Real Time Clock drivers. In the pre-DT world these would be loaded
  36 +by writing a magic string comprising a device identifier and an I2C address to
  37 +a special file in /sys/class/i2c-adapter, having first loaded the driver for
  38 +the I2C interface and the RTC device - something like this:
  39 +
  40 +    modprobe i2c-bcm2835
  41 +    modprobe rtc-ds1307
  42 +    echo ds1307 0x68 > /sys/class/i2c-adapter/i2c-1/new_device
  43 +
  44 +With DT enabled, this becomes a line in config.txt:
  45 +
  46 +    dtoverlay=i2c-rtc,ds1307
  47 +
  48 +This causes the file /boot/overlays/i2c-rtc.dtbo to be loaded and a "node"
  49 +describing the DS1307 I2C device to be added to the Device Tree for the Pi. By
  50 +default it usees address 0x68, but this can be modified with an additional DT
  51 +parameter:
  52 +
  53 +    dtoverlay=i2c-rtc,ds1307,addr=0x68
  54 +
  55 +Parameters usually have default values, although certain parameters are
  56 +mandatory. See the list of overlays below for a description of the parameters
  57  and their defaults.
  58
  59  The Overlay and Parameter Reference
  60 @@ -1135,29 +1141,8 @@ Params: <None>
  61
  62
  63  Name:   lirc-rpi
  64 -Info:   Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
  65 -        Consult the module documentation for more details.
  66 -Load:   dtoverlay=lirc-rpi,<param>=<val>
  67 -Params: gpio_out_pin            GPIO for output (default "17")
  68 -
  69 -        gpio_in_pin             GPIO for input (default "18")
  70 -
  71 -        gpio_in_pull            Pull up/down/off on the input pin
  72 -                                (default "down")
  73 -
  74 -        sense                   Override the IR receive auto-detection logic:
  75 -                                 "0" = force active-high
  76 -                                 "1" = force active-low
  77 -                                 "-1" = use auto-detection
  78 -                                (default "-1")
  79 -
  80 -        softcarrier             Turn the software carrier "on" or "off"
  81 -                                (default "on")
  82 -
  83 -        invert                  "on" = invert the output pin (default "off")
  84 -
  85 -        debug                   "on" = enable additional debug messages
  86 -                                (default "off")
  87 +Info:   This overlay has been deprecated and removed - see gpio-ir
  88 +Load:   <Deprecated>
  89
  90
  91  Name:   ltc294x