93 lines
2.5 KiB
Diff
93 lines
2.5 KiB
Diff
From e6afcd3974550086b86bbd09ed1f5231d31757a3 Mon Sep 17 00:00:00 2001
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From: Matt Flax <flatmax@flatmax.org>
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Date: Tue, 12 Apr 2022 02:28:07 +1000
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Subject: [PATCH] Add support for the AudioInjector.net bare i2s sound
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card
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Signed-off-by: Matt Flax <flatmax@flatmax.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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.../audioinjector-bare-i2s-overlay.dts | 50 +++++++++++++++++++
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3 files changed, 57 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/audioinjector-bare-i2s-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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@@ -25,6 +25,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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applepi-dac.dtbo \
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at86rf233.dtbo \
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audioinjector-addons.dtbo \
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+ audioinjector-bare-i2s.dtbo \
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audioinjector-isolated-soundcard.dtbo \
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audioinjector-ultra.dtbo \
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audioinjector-wm8731-audio.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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@@ -601,6 +601,12 @@ Params: non-stop-clocks Keeps th
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is paused or stopped (default off)
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+Name: audioinjector-bare-i2s
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+Info: Configures the audioinjector.net audio bare i2s soundcard
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+Load: dtoverlay=audioinjector-bare-i2s
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+Params: <None>
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+
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+
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Name: audioinjector-isolated-soundcard
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Info: Configures the audioinjector.net isolated soundcard
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Load: dtoverlay=audioinjector-isolated-soundcard
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/audioinjector-bare-i2s-overlay.dts
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@@ -0,0 +1,50 @@
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+// Definitions for audioinjector.net audio soundcard
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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>;
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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>;
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+ status = "okay";
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+
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+ simple-audio-card,name = "audioinjector-bare";
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+ simple-audio-card,format = "i2s";
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+
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+ simple-audio-card,bitclock-master = <&dailink0_master>;
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+ simple-audio-card,frame-master = <&dailink0_master>;
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+
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+ dailink0_master: simple-audio-card,cpu {
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+ sound-dai = <&i2s>;
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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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