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2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
63 lines
1.9 KiB
Diff
63 lines
1.9 KiB
Diff
From c865e89f79eca5a324d541a03aa4725bc0614f64 Mon Sep 17 00:00:00 2001
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From: Martin Sperl <kernel@martin.sperl.org>
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Date: Sat, 23 Apr 2016 15:21:41 +0000
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Subject: [PATCH] ARM: bcm2835: add i2s-gpio28-31 for cm
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Add i2s-gpio28-31 overlay for compute module
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so that i2s is using gpio28-31
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Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 6 ++++++
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arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts | 18 ++++++++++++++++++
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3 files changed, 25 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -37,6 +37,7 @@ dtbo-$(RPI_DT_OVERLAYS) += i2c-mux-pca95
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dtbo-$(RPI_DT_OVERLAYS) += i2c-pwm-pca9685a.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c0-bcm2708.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c1-bcm2708.dtbo
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+dtbo-$(RPI_DT_OVERLAYS) += i2s-gpio28-31.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2s-mmap.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dac.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dacplus.dtbo
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -464,6 +464,12 @@ Params: sda1_pin GPIO pin
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default 4)
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+Name: i2s-gpio28-31
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+Info: move I2S function block to GPIO 28 to 31
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+Load: dtoverlay=i2s-gpio28-31
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+Params: <None>
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+
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+
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Name: i2s-mmap
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Info: Enables mmap support in the bcm2708-i2s driver
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Load: dtoverlay=i2s-mmap
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/i2s-gpio28-31-overlay.dts
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@@ -0,0 +1,18 @@
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+/*
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+ * Device tree overlay to move i2s to gpio 28 to 31 on CM
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ fragment@0 {
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+ target = <&i2s_pins>;
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+ __overlay__ {
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+ brcm,pins = <28 29 30 31>;
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+ brcm,function = <6>; /* alt2 */
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+ };
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+ };
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+};
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