arch/arm64/boot/dts/renesas/ulcb-simple-audio-card.dtsi

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Device Tree for ULCB + Simple Audio Card
   4  *
   5  * Copyright (C) 2022 Renesas Electronics Corp.
   6  */
   7
   8 /*
   9  *      (A) CPU0 <----> ak4613
  10  *      (B) CPU1  ----> HDMI
  11  *
  12  *      (A) aplay   -D plughw:0,0 xxx.wav
  13  *      (B) aplay   -D plughw:0,1 xxx.wav
  14  *
  15  *      (A) arecord -D plughw:0,0 xxx.wav
  16  */
  17
  18 / {
  19         sound_card: sound {
  20                 compatible = "simple-audio-card";
  21                 label = "snd-ulcb";
  22
  23                 #address-cells = <1>;
  24                 #size-cells = <0>;
  25
  26                 /*
  27                  * (A) CPU0 <-> ak4613
  28                  */
  29                 simple-audio-card,dai-link@0 {
  30                         reg = <0>;
  31                         cpu {
  32                                 bitclock-master;
  33                                 frame-master;
  34                                 sound-dai = <&rcar_sound 0>;
  35                         };
  36                         codec {
  37                                 sound-dai = <&ak4613>;
  38                         };
  39                 };
  40                 /*
  41                  * (B) CPU1 -> HDMI
  42                  */
  43                 simple-audio-card,dai-link@1 {
  44                         reg = <1>;
  45                         cpu {
  46                                 bitclock-master;
  47                                 frame-master;
  48                                 sound-dai = <&rcar_sound 1>;
  49                         };
  50                         codec {
  51                                 sound-dai = <&hdmi0>;
  52                         };
  53                 };
  54         };
  55 };
  56
  57 &ak4613 {
  58         /*
  59          * (A) CPU0 <-> ak4613
  60          */
  61         #sound-dai-cells = <0>;
  62 };
  63
  64 &hdmi0 {
  65         /*
  66          * (B) CPU1 -> HDMI
  67          */
  68         #sound-dai-cells = <0>;
  69 };
  70
  71 &rcar_sound {
  72         #address-cells = <1>;
  73         #size-cells = <0>;
  74         #sound-dai-cells = <1>;
  75
  76         rcar_sound,dai@0 {
  77                 reg = <0>;
  78
  79                 /*
  80                  * (A) CPU0 <-> ak4613
  81                  */
  82                 dai0 {
  83                         playback = <&ssi0 &src0 &dvc0>;
  84                         capture  = <&ssi1 &src1 &dvc1>;
  85                 };
  86                 /*
  87                  * (B) CPU1 -> HDMI
  88                  */
  89                 dai1 {
  90                         playback = <&ssi2>;
  91                 };
  92         };
  93 };