arch/arm/boot/dts/overlays/pibell-overlay.dts

   1 /dts-v1/;
   2 /plugin/;
   3
   4 / {
   5     compatible = "brcm,bcm2835";
   6
   7     fragment@0 {
   8         target-path = "/";
   9         __overlay__ {
  10             codec_out: spdif-transmitter {
  11                 #address-cells = <0>;
  12                 #size-cells = <0>;
  13                 #sound-dai-cells = <0>;
  14                 compatible = "linux,spdif-dit";
  15                 status = "okay";
  16             };
  17
  18             codec_in: card-codec {
  19                 #sound-dai-cells = <0>;
  20                 compatible = "invensense,ics43432";
  21                 status = "okay";
  22             };
  23         };
  24     };
  25
  26     fragment@1 {
  27         target = <&i2s>;
  28         __overlay__ {
  29             #sound-dai-cells = <0>;
  30             status = "okay";
  31         };
  32     };
  33
  34     fragment@2 {
  35         target = <&sound>;
  36         snd: __overlay__ {
  37             compatible = "simple-audio-card";
  38             simple-audio-card,name = "PiBell";
  39
  40             status="okay";
  41
  42             capture_link: simple-audio-card,dai-link@0 {
  43                 format = "i2s";
  44
  45                 r_cpu_dai: cpu {
  46                     sound-dai = <&i2s>;
  47
  48 /* example TDM slot configuration
  49                     dai-tdm-slot-num = <2>;
  50                     dai-tdm-slot-width = <32>;
  51 */
  52                 };
  53
  54                 r_codec_dai: codec {
  55                     sound-dai = <&codec_in>;
  56                 };
  57             };
  58
  59             playback_link: simple-audio-card,dai-link@1 {
  60                 format = "i2s";
  61
  62                 p_cpu_dai: cpu {
  63                     sound-dai = <&i2s>;
  64
  65 /* example TDM slot configuration
  66                     dai-tdm-slot-num = <2>;
  67                     dai-tdm-slot-width = <32>;
  68 */
  69                 };
  70
  71                 p_codec_dai: codec {
  72                     sound-dai = <&codec_out>;
  73                 };
  74             };
  75         };
  76     };
  77
  78     __overrides__ {
  79         alsaname = <&snd>, "simple-audio-card,name";
  80     };
  81 };