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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Device Tree for ULCB + Audio Graph 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 = "audio-graph-card";
  21                 label = "snd-ulcb";
  22
  23                 dais = <&snd_ulcb1 /* (A) CPU0 <-> ak4613 */
  24                         &snd_ulcb2 /* (B) CPU1  -> HDMI   */
  25                 >;
  26         };
  27 };
  28
  29 &ak4613 {
  30         #sound-dai-cells = <0>;
  31
  32         port {
  33                 /*
  34                  * (A) CPU0 <-> ak4613
  35                  */
  36                 ak4613_endpoint: endpoint {
  37                         remote-endpoint = <&rsnd_for_ak4613>;
  38                 };
  39         };
  40 };
  41
  42 &hdmi0 {
  43         ports {
  44                 port@2 {
  45                         /*
  46                          * (B) CPU1 -> HDMI
  47                          */
  48                         dw_hdmi0_snd_in: endpoint {
  49                                 remote-endpoint = <&rsnd_for_hdmi>;
  50                         };
  51                 };
  52         };
  53 };
  54
  55 &rcar_sound {
  56         #address-cells = <1>;
  57         #size-cells = <0>;
  58
  59         ports@0 {
  60                 #address-cells = <1>;
  61                 #size-cells = <0>;
  62                 reg = <0>;
  63
  64                 snd_ulcb1: port@0 {
  65                         /*
  66                          * (A) CPU0 <-> ak4613
  67                          */
  68                         reg = <0>;
  69                         rsnd_for_ak4613: endpoint {
  70                                 remote-endpoint = <&ak4613_endpoint>;
  71                                 bitclock-master;
  72                                 frame-master;
  73                                 playback = <&ssi0>, <&src0>, <&dvc0>;
  74                                 capture  = <&ssi1>, <&src1>, <&dvc1>;
  75                         };
  76                 };
  77                 snd_ulcb2: port@1 {
  78                         /*
  79                          * (B) CPU1 -> HDMI
  80                          */
  81                         reg = <1>;
  82                         rsnd_for_hdmi: endpoint {
  83                                 remote-endpoint = <&dw_hdmi0_snd_in>;
  84                                 bitclock-master;
  85                                 frame-master;
  86                                 playback = <&ssi2>;
  87                         };
  88                 };
  89         };
  90 };