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From e0db21bda68cda5dbc4525ca7fe9528c74866359 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 19 Aug 2016 11:26:57 +0100
Subject: [PATCH] overlays: Add audremap overlay
The audremap overlay switches the PWM audio outputs to GPIO pins
12 (L) and 13 (R).
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 6 ++++++
arch/arm/boot/dts/overlays/audremap-overlay.dts | 14 ++++++++++++++
3 files changed, 21 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/audremap-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -18,6 +18,7 @@ dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
dtbo-$(RPI_DT_OVERLAYS) += akkordion-iqdacplus.dtbo
dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
dtbo-$(RPI_DT_OVERLAYS) += audioinjector-wm8731-audio.dtbo
+dtbo-$(RPI_DT_OVERLAYS) += audremap.dtbo
dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
dtbo-$(RPI_DT_OVERLAYS) += dht11.dtbo
dtbo-$(RPI_DT_OVERLAYS) += dionaudio-loco.dtbo
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -253,6 +253,12 @@ Load: dtoverlay=audioinjector-wm8731-a
Params: <None>
+Name: audremap
+Info: Switches PWM sound output to pins 12 & 13
+Load: dtoverlay=audremap
+Params: <None>
+
+
Name: bmp085_i2c-sensor
Info: Configures the BMP085/BMP180 digital barometric pressure and temperature
sensors from Bosch Sensortec
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/audremap-overlay.dts
@@ -0,0 +1,14 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&audio_pins>;
+ __overlay__ {
+ brcm,pins = < 12 13 >;
+ brcm,function = < 4 >; /* alt0 alt0 */
+ };
+ };
+};
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