git.openwrt.org Git - openwrt/staging/neocturne.git/blob

   1 From e6afcd3974550086b86bbd09ed1f5231d31757a3 Mon Sep 17 00:00:00 2001
   2 From: Matt Flax <flatmax@flatmax.org>
   3 Date: Tue, 12 Apr 2022 02:28:07 +1000
   4 Subject: [PATCH] Add support for the AudioInjector.net bare i2s sound
   5  card
   6
   7 Signed-off-by: Matt Flax <flatmax@flatmax.org>
   8 ---
   9  arch/arm/boot/dts/overlays/Makefile           |  1 +
  10  arch/arm/boot/dts/overlays/README             |  6 +++
  11  .../audioinjector-bare-i2s-overlay.dts        | 50 +++++++++++++++++++
  12  3 files changed, 57 insertions(+)
  13  create mode 100644 arch/arm/boot/dts/overlays/audioinjector-bare-i2s-overlay.dts
  14
  15 --- a/arch/arm/boot/dts/overlays/Makefile
  16 +++ b/arch/arm/boot/dts/overlays/Makefile
  17 @@ -25,6 +25,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  18         applepi-dac.dtbo \
  19         at86rf233.dtbo \
  20         audioinjector-addons.dtbo \
  21 +       audioinjector-bare-i2s.dtbo \
  22         audioinjector-isolated-soundcard.dtbo \
  23         audioinjector-ultra.dtbo \
  24         audioinjector-wm8731-audio.dtbo \
  25 --- a/arch/arm/boot/dts/overlays/README
  26 +++ b/arch/arm/boot/dts/overlays/README
  27 @@ -601,6 +601,12 @@ Params: non-stop-clocks         Keeps th
  28                                  is paused or stopped (default off)
  29
  30
  31 +Name:   audioinjector-bare-i2s
  32 +Info:   Configures the audioinjector.net audio bare i2s soundcard
  33 +Load:   dtoverlay=audioinjector-bare-i2s
  34 +Params: <None>
  35 +
  36 +
  37  Name:   audioinjector-isolated-soundcard
  38  Info:   Configures the audioinjector.net isolated soundcard
  39  Load:   dtoverlay=audioinjector-isolated-soundcard
  40 --- /dev/null
  41 +++ b/arch/arm/boot/dts/overlays/audioinjector-bare-i2s-overlay.dts
  42 @@ -0,0 +1,50 @@
  43 +// Definitions for audioinjector.net audio soundcard
  44 +/dts-v1/;
  45 +/plugin/;
  46 +
  47 +/ {
  48 +       compatible = "brcm,bcm2835";
  49 +
  50 +       fragment@0 {
  51 +               target = <&i2s>;
  52 +               __overlay__ {
  53 +                       status = "okay";
  54 +               };
  55 +       };
  56 +
  57 +       fragment@1 {
  58 +               target-path = "/";
  59 +               __overlay__ {
  60 +                       codec_bare: codec_bare {
  61 +                               compatible = "linux,spdif-dit";
  62 +                               #sound-dai-cells = <0>;
  63 +                               status = "okay";
  64 +                       };
  65 +               };
  66 +       };
  67 +
  68 +       fragment@2 {
  69 +               target = <&sound>;
  70 +               __overlay__ {
  71 +                       compatible = "simple-audio-card";
  72 +                       i2s-controller = <&i2s>;
  73 +                       status = "okay";
  74 +
  75 +                       simple-audio-card,name = "audioinjector-bare";
  76 +                       simple-audio-card,format = "i2s";
  77 +
  78 +                       simple-audio-card,bitclock-master = <&dailink0_master>;
  79 +                       simple-audio-card,frame-master = <&dailink0_master>;
  80 +
  81 +                       dailink0_master: simple-audio-card,cpu {
  82 +                               sound-dai = <&i2s>;
  83 +                               dai-tdm-slot-num = <2>;
  84 +                               dai-tdm-slot-width = <32>;
  85 +                       };
  86 +
  87 +                       snd_codec: simple-audio-card,codec {
  88 +                                       sound-dai = <&codec_bare>;
  89 +                       };
  90 +               };
  91 +       };
  92 +};