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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Device Tree for ULCB + Kingfisher + Simple Audio Card
   4  *
   5  * Copyright (C) 2022 Renesas Electronics Corp.
   6  */
   7
   8 /*
   9  *      (A) CPU0 <----> ak4613
  10  *      (B) CPU1  ----> HDMI
  11  *      (C) CPU2  ----> PCM3168A-p
  12  *      (D) CPU3 <----  PCM3168A-c
  13  *
  14  *      (A) aplay   -D plughw:0,0 xxx.wav
  15  *      (B) aplay   -D plughw:0,1 xxx.wav
  16  *      (C) aplay   -D plughw:1,0 xxx.wav
  17  *
  18  *      (A) arecord -D plughw:0,0 xxx.wav
  19  *      (D) arecord -D plughw:1,1 xxx.wav
  20  */
  21
  22 / {
  23         sound_card_kf: expand-sound {
  24                 compatible = "simple-audio-card";
  25                 label = "snd-kf";
  26
  27                 #address-cells = <1>;
  28                 #size-cells = <0>;
  29
  30                 /*
  31                  * (C) CPU2 -> PCM3168A-p
  32                  */
  33                 simple-audio-card,dai-link@0 {
  34                         reg = <0>;
  35                         cpu {
  36                                 bitclock-master;
  37                                 frame-master;
  38                                 dai-tdm-slot-num = <8>;
  39                                 sound-dai = <&rcar_sound 2>;
  40                         };
  41                         codec {
  42                                 mclk-fs = <512>;
  43                                 sound-dai = <&pcm3168a 0>;
  44                         };
  45                 };
  46                 /*
  47                  * (D) CPU3 <- PCM3168A-c
  48                  */
  49                 simple-audio-card,dai-link@1 {
  50                         reg = <1>;
  51                         cpu {
  52                                 bitclock-master;
  53                                 frame-master;
  54                                 dai-tdm-slot-num = <6>;
  55                                 sound-dai = <&rcar_sound 3>;
  56                         };
  57                         codec {
  58                                 mclk-fs = <512>;
  59                                 sound-dai = <&pcm3168a 1>;
  60                         };
  61                 };
  62         };
  63 };
  64
  65 &pcm3168a {
  66         /*
  67          * (C) CPU2 -> PCM3168A-p
  68          * (D) CPU3 <- PCM3168A-c
  69          */
  70         #sound-dai-cells = <1>;
  71 };
  72
  73 &rcar_sound {
  74         rcar_sound,dai@1 {
  75                 reg = <1>;
  76
  77                 /*
  78                  * (C) CPU2 -> PCM3168A-p
  79                  */
  80                 dai2 {
  81                         playback = <&ssi3>;
  82                 };
  83                 /*
  84                  * (D) CPU3 <- PCM3168A-c
  85                  */
  86                 dai3 {
  87                         capture = <&ssi4>;
  88                 };
  89         };
  90 };