target/linux/brcm2708/patches-4.4/0489-overlays-Add-audremap-overlay.patch

   1 From 612d9be3d6aa73b018005a182bd55a551abfc271 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 19 Aug 2016 11:26:57 +0100
   4 Subject: [PATCH] overlays: Add audremap overlay
   5
   6 The audremap overlay switches the PWM audio outputs to GPIO pins
   7 12 (L) and 13 (R).
   8 ---
   9  arch/arm/boot/dts/overlays/Makefile             |  1 +
  10  arch/arm/boot/dts/overlays/README               |  6 ++++++
  11  arch/arm/boot/dts/overlays/audremap-overlay.dts | 14 ++++++++++++++
  12  3 files changed, 21 insertions(+)
  13  create mode 100644 arch/arm/boot/dts/overlays/audremap-overlay.dts
  14
  15 --- a/arch/arm/boot/dts/overlays/Makefile
  16 +++ b/arch/arm/boot/dts/overlays/Makefile
  17 @@ -18,6 +18,7 @@ dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
  18  dtbo-$(RPI_DT_OVERLAYS) += akkordion-iqdacplus.dtbo
  19  dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
  20  dtbo-$(RPI_DT_OVERLAYS) += audioinjector-wm8731-audio.dtbo
  21 +dtbo-$(RPI_DT_OVERLAYS) += audremap.dtbo
  22  dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
  23  dtbo-$(RPI_DT_OVERLAYS) += dht11.dtbo
  24  dtbo-$(RPI_DT_OVERLAYS) += dionaudio-loco.dtbo
  25 --- a/arch/arm/boot/dts/overlays/README
  26 +++ b/arch/arm/boot/dts/overlays/README
  27 @@ -253,6 +253,12 @@ Load:   dtoverlay=audioinjector-wm8731-a
  28  Params: <None>
  29
  30
  31 +Name:   audremap
  32 +Info:   Switches PWM sound output to pins 12 & 13
  33 +Load:   dtoverlay=audremap
  34 +Params: <None>
  35 +
  36 +
  37  Name:   bmp085_i2c-sensor
  38  Info:   Configures the BMP085/BMP180 digital barometric pressure and temperature
  39          sensors from Bosch Sensortec
  40 --- /dev/null
  41 +++ b/arch/arm/boot/dts/overlays/audremap-overlay.dts
  42 @@ -0,0 +1,14 @@
  43 +/dts-v1/;
  44 +/plugin/;
  45 +
  46 +/ {
  47 +        compatible = "brcm,bcm2708";
  48 +
  49 +        fragment@0 {
  50 +                target = <&audio_pins>;
  51 +                __overlay__ {
  52 +                        brcm,pins = < 12 13 >;
  53 +                        brcm,function = < 4 >; /* alt0 alt0 */
  54 +                };
  55 +        };
  56 +};