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

   1 // Definitions for SuperAudioBoard
   2 /dts-v1/;
   3 /plugin/;
   4
   5 / {
   6         compatible = "brcm,bcm2835";
   7
   8         fragment@0 {
   9                 target = <&sound>;
  10                 __overlay__ {
  11                         compatible = "simple-audio-card";
  12                         i2s-controller = <&i2s>;
  13                         status = "okay";
  14
  15                         simple-audio-card,name = "SuperAudioBoard";
  16
  17                         simple-audio-card,widgets =
  18                                 "Line", "Line In",
  19                                 "Line", "Line Out";
  20
  21                         simple-audio-card,routing =
  22                                 "Line Out","AOUTA+",
  23                                 "Line Out","AOUTA-",
  24                                 "Line Out","AOUTB+",
  25                                 "Line Out","AOUTB-",
  26                                 "AINA","Line In",
  27                                 "AINB","Line In";
  28
  29                         simple-audio-card,format = "i2s";
  30
  31                         simple-audio-card,bitclock-master = <&sound_master>;
  32                         simple-audio-card,frame-master = <&sound_master>;
  33
  34                         simple-audio-card,cpu {
  35                                 sound-dai = <&i2s>;
  36                                 dai-tdm-slot-num = <2>;
  37                                 dai-tdm-slot-width = <32>;
  38                         };
  39
  40                         sound_master: simple-audio-card,codec {
  41                                 sound-dai = <&cs4271>;
  42                                 system-clock-frequency = <24576000>;
  43                         };
  44                 };
  45         };
  46
  47         fragment@1 {
  48                 target = <&i2s>;
  49                 __overlay__ {
  50                         status = "okay";
  51                 };
  52         };
  53
  54         fragment@2 {
  55                 target = <&i2c1>;
  56                 __overlay__ {
  57                         #address-cells = <1>;
  58                         #size-cells = <0>;
  59                         status = "okay";
  60
  61                         cs4271: cs4271@10 {
  62                                 #sound-dai-cells = <0>;
  63                                 compatible = "cirrus,cs4271";
  64                                 reg = <0x10>;
  65                                 status = "okay";
  66                                 reset-gpio = <&gpio 26 0>; /* Pin 26, active high */
  67                         };
  68                 };
  69         };
  70         __overrides__ {
  71                 gpiopin = <&cs4271>,"reset-gpio:4";
  72         };
  73 };