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From 791046d531f798944715a214748387449ae9c4b8 Mon Sep 17 00:00:00 2001
From: Martin Sperl <kernel@martin.sperl.org>
Date: Sat, 23 Apr 2016 15:21:41 +0000
Subject: [PATCH 304/381] ARM: bcm2835: add i2s-gpio28-31 for cm
Add i2s-gpio28-31 overlay for compute module
so that i2s is using gpio28-31
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 6 ++++++
arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts | 18 ++++++++++++++++++
3 files changed, 25 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -37,6 +37,7 @@ dtbo-$(RPI_DT_OVERLAYS) += i2c-mux-pca95
dtbo-$(RPI_DT_OVERLAYS) += i2c-pwm-pca9685a.dtbo
dtbo-$(RPI_DT_OVERLAYS) += i2c0-bcm2708.dtbo
dtbo-$(RPI_DT_OVERLAYS) += i2c1-bcm2708.dtbo
+dtbo-$(RPI_DT_OVERLAYS) += i2s-gpio28-31.dtbo
dtbo-$(RPI_DT_OVERLAYS) += i2s-mmap.dtbo
dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dac.dtbo
dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dacplus.dtbo
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -464,6 +464,12 @@ Params: sda1_pin GPIO pin
default 4)
+Name: i2s-gpio28-31
+Info: move I2S function block to GPIO 28 to 31
+Load: dtoverlay=i2s-gpio28-31
+Params: <None>
+
+
Name: i2s-mmap
Info: Enables mmap support in the bcm2708-i2s driver
Load: dtoverlay=i2s-mmap
--- /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 */
+ };
+ };
+};
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