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}; 91