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538a1d740c
The patches were generated from the RPi repo with the following command: git format-patch v6.6.58..rpi-6.6.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
97 lines
2.5 KiB
Diff
97 lines
2.5 KiB
Diff
From 209e8a3e6646f25abb352fd5a8a4c2e855b1e952 Mon Sep 17 00:00:00 2001
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From: Adrian Figueroa <elagil@takanome.de>
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Date: Wed, 14 Aug 2024 20:00:12 +0200
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Subject: [PATCH 1219/1350] overlays: add overlay for generic I2S clock-master
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DAC
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Adds an overlay for supporting a generic I2S DAC that
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acts as the clock master on the bus.
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The data format is 32 bit stereo.
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Signed-off-by: Adrian Figueroa <elagil@takanome.de>
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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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.../dts/overlays/i2s-master-dac-overlay.dts | 50 +++++++++++++++++++
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3 files changed, 57 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/i2s-master-dac-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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@@ -125,6 +125,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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i2c6.dtbo \
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i2s-dac.dtbo \
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i2s-gpio28-31.dtbo \
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+ i2s-master-dac.dtbo \
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ilitek251x.dtbo \
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imx219.dtbo \
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imx258.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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@@ -2633,6 +2633,12 @@ Load: dtoverlay=i2s-gpio28-31
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Params: <None>
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+Name: i2s-master-dac
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+Info: Configures a generic I2S DAC soundcard that acts as a clock master.
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+Load: dtoverlay=i2s-master-dac
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+Params: <None>
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+
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+
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Name: ilitek251x
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Info: Enables I2C connected Ilitek 251x multiple touch controller using
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GPIO 4 (pin 7 on GPIO header) for interrupt.
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/i2s-master-dac-overlay.dts
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@@ -0,0 +1,50 @@
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+// Definitions for a generic I2S DAC that acts as clock master on the bus.
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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";
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+
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+ fragment@0 {
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+ target = <&i2s_clk_consumer>;
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+ __overlay__ {
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+ status = "okay";
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+ };
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+ };
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+
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+ fragment@1 {
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+ target-path = "/";
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+ __overlay__ {
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+ codec_bare: codec_bare {
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+ compatible = "linux,spdif-dit";
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+ #sound-dai-cells = <0>;
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&sound>;
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+ __overlay__ {
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+ compatible = "simple-audio-card";
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+ i2s-controller = <&i2s_clk_consumer>;
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+ status = "okay";
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+
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+ simple-audio-card,name = "i2s-master-dac";
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+ simple-audio-card,format = "i2s";
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+
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+ simple-audio-card,bitclock-master = <&snd_codec>;
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+ simple-audio-card,frame-master = <&snd_codec>;
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+
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+ simple-audio-card,cpu {
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+ sound-dai = <&i2s_clk_consumer>;
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+ dai-tdm-slot-num = <2>;
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+ dai-tdm-slot-width = <32>;
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+ };
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+
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+ snd_codec: simple-audio-card,codec {
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+ sound-dai = <&codec_bare>;
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+ };
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+ };
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+ };
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+};
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