target/linux/bcm27xx/patches-5.10/950-0680-overlays-Add-overlay-for-Chipdip-I2S-master-DAC.patch

   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
   5
   6 Signed-off-by: Evgenij Sapunov <evgenij.sapunov@chipdip.ru>
   7 ---
   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
  13
  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) += \
  17         audiosense-pi.dtbo \
  18         audremap.dtbo \
  19         balena-fin.dtbo \
  20 +       chipdip-i2s-master-dac.dtbo \
  21         cma.dtbo \
  22         dht11.dtbo \
  23         dionaudio-loco.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 -
  27  Load:   <Deprecated>
  28
  29
  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
  33 +Params: <None>
  34 +
  35 +
  36  Name:   cma
  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.
  39 --- /dev/null
  40 +++ b/arch/arm/boot/dts/overlays/chipdip-i2s-master-dac-overlay.dts
  41 @@ -0,0 +1,53 @@
  42 +/*
  43 + * Device Tree overlay for ChipDip I2S master DAC
  44 + */
  45 +
  46 +/dts-v1/;
  47 +/plugin/;
  48 +
  49 +/ {
  50 +    compatible = "brcm,bcm2835";
  51 +    fragment@0 {
  52 +        target = <&sound>;
  53 +        __overlay__ {
  54 +            compatible = "simple-audio-card";
  55 +            simple-audio-card,name = "ChipDip I2S master DAC";
  56 +            status="okay";
  57 +            playback_link: simple-audio-card,dai-link@0 {
  58 +                format = "i2s";
  59 +               bitclock-master = <&p_codec_dai>;
  60 +                frame-master = <&p_codec_dai>;
  61 +                p_cpu_dai: cpu {
  62 +                        sound-dai = <&i2s>;
  63 +                       dai-tdm-slot-num = <2>;
  64 +                       dai-tdm-slot-width = <32>;
  65 +                               };
  66 +
  67 +                p_codec_dai: codec {
  68 +                        sound-dai = <&codec_out>;
  69 +                };
  70 +            };
  71 +        };
  72 +    };
  73 +
  74 +    fragment@1 {
  75 +        target-path = "/";
  76 +        __overlay__ {
  77 +            codec_out: spdif-transmitter {
  78 +                #address-cells = <0>;
  79 +                #size-cells = <0>;
  80 +                #sound-dai-cells = <0>;
  81 +                compatible = "linux,spdif-dit";
  82 +                status = "okay";
  83 +            };
  84 +        };
  85 +    };
  86 +
  87 +    fragment@2 {
  88 +        target = <&i2s>;
  89 +        __overlay__ {
  90 +            #sound-dai-cells = <0>;
  91 +            status = "okay";
  92 +        };
  93 +    };
  94 +};