1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0680-overlays-Add-overlay-for-Chipdip-I2S-master-DAC.patch b/target/linux/bcm27xx/patches-5.10/950-0680-overlays-Add-overlay-for-Chipdip-I2S-master-DAC.patch
new file mode 100644
index 0000000000..6428e2fc0f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0680-overlays-Add-overlay-for-Chipdip-I2S-master-DAC.patch
@@ -0,0 +1,94 @@
+From 63f4efd396406bcfea7f72c4ba883a9acf0e039c Mon Sep 17 00:00:00 2001
+From: "chipdip.lab" <43340836+chipdipru@users.noreply.github.com>
+Date: Fri, 9 Jul 2021 16:00:22 +0300
+Subject: [PATCH] overlays: Add overlay for Chipdip I2S master DAC
+
+Signed-off-by: Evgenij Sapunov <evgenij.sapunov@chipdip.ru>
+---
+ arch/arm/boot/dts/overlays/Makefile           |  1 +
+ arch/arm/boot/dts/overlays/README             |  6 +++
+ .../chipdip-i2s-master-dac-overlay.dts        | 53 +++++++++++++++++++
+ 3 files changed, 60 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/chipdip-i2s-master-dac-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -30,6 +30,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ 	audiosense-pi.dtbo \
+ 	audremap.dtbo \
+ 	balena-fin.dtbo \
++	chipdip-i2s-master-dac.dtbo \
+ 	cma.dtbo \
+ 	dht11.dtbo \
+ 	dionaudio-loco.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -622,6 +622,12 @@ Info:   This overlay is now deprecated -
+ Load:   <Deprecated>
+ 
+ 
++Name:   chipdip-i2s-master-dac
++Info:   Configures Raspberry PI to work as I2S slave with BCLK=64Fs.
++Load:   dtoverlay=chipdip-i2s-master-dac
++Params: <None>
++
++
+ Name:   cma
+ Info:   Set custom CMA sizes, only use if you know what you are doing, might
+         clash with other overlays like vc4-fkms-v3d and vc4-kms-v3d.
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/chipdip-i2s-master-dac-overlay.dts
+@@ -0,0 +1,53 @@
++/*
++ * Device Tree overlay for ChipDip I2S master DAC
++ */
++
++/dts-v1/;
++/plugin/;
++
++/ {
++    compatible = "brcm,bcm2835";
++    fragment@0 {
++        target = <&sound>;
++        __overlay__ {
++            compatible = "simple-audio-card";
++            simple-audio-card,name = "ChipDip I2S master DAC";
++            status="okay";
++            playback_link: simple-audio-card,dai-link@0 {
++                format = "i2s";
++		bitclock-master = <&p_codec_dai>;
++                frame-master = <&p_codec_dai>;
++                p_cpu_dai: cpu {
++                        sound-dai = <&i2s>;
++			dai-tdm-slot-num = <2>;
++			dai-tdm-slot-width = <32>;
++				};
++
++                p_codec_dai: codec {
++                        sound-dai = <&codec_out>;
++                };
++            };
++        };
++    }; 
++
++    fragment@1 {
++        target-path = "/";
++        __overlay__ {
++            codec_out: spdif-transmitter {
++                #address-cells = <0>;
++                #size-cells = <0>;
++                #sound-dai-cells = <0>;
++                compatible = "linux,spdif-dit";
++                status = "okay";
++            };
++        };
++    };
++ 
++    fragment@2 {
++        target = <&i2s>;
++        __overlay__ {
++            #sound-dai-cells = <0>;
++            status = "okay";
++        };
++    };
++};