1 From 63f4efd396406bcfea7f72c4ba883a9acf0e039c Mon Sep 17 00:00:00 2001
2 From: "chipdip.lab" <43340836+chipdipru@users.noreply.github.com>
3 Date: Fri, 9 Jul 2021 16:00:22 +0300
4 Subject: [PATCH] overlays: Add overlay for Chipdip I2S master DAC
6 Signed-off-by: Evgenij Sapunov <evgenij.sapunov@chipdip.ru>
8 arch/arm/boot/dts/overlays/Makefile | 1 +
9 arch/arm/boot/dts/overlays/README | 6 +++
10 .../chipdip-i2s-master-dac-overlay.dts | 53 +++++++++++++++++++
11 3 files changed, 60 insertions(+)
12 create mode 100644 arch/arm/boot/dts/overlays/chipdip-i2s-master-dac-overlay.dts
14 --- a/arch/arm/boot/dts/overlays/Makefile
15 +++ b/arch/arm/boot/dts/overlays/Makefile
16 @@ -30,6 +30,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
20 + chipdip-i2s-master-dac.dtbo \
24 --- a/arch/arm/boot/dts/overlays/README
25 +++ b/arch/arm/boot/dts/overlays/README
26 @@ -622,6 +622,12 @@ Info: This overlay is now deprecated -
30 +Name: chipdip-i2s-master-dac
31 +Info: Configures Raspberry PI to work as I2S slave with BCLK=64Fs.
32 +Load: dtoverlay=chipdip-i2s-master-dac
37 Info: Set custom CMA sizes, only use if you know what you are doing, might
38 clash with other overlays like vc4-fkms-v3d and vc4-kms-v3d.
40 +++ b/arch/arm/boot/dts/overlays/chipdip-i2s-master-dac-overlay.dts
43 + * Device Tree overlay for ChipDip I2S master DAC
50 + compatible = "brcm,bcm2835";
54 + compatible = "simple-audio-card";
55 + simple-audio-card,name = "ChipDip I2S master DAC";
57 + playback_link: simple-audio-card,dai-link@0 {
59 + bitclock-master = <&p_codec_dai>;
60 + frame-master = <&p_codec_dai>;
63 + dai-tdm-slot-num = <2>;
64 + dai-tdm-slot-width = <32>;
67 + p_codec_dai: codec {
68 + sound-dai = <&codec_out>;
77 + codec_out: spdif-transmitter {
78 + #address-cells = <0>;
80 + #sound-dai-cells = <0>;
81 + compatible = "linux,spdif-dit";
90 + #sound-dai-cells = <0>;