// SPDX-License-Identifier: GPL-2.0 /* * Device Tree for ULCB + Audio Graph Card * * Copyright (C) 2022 Renesas Electronics Corp. */ /* * (A) CPU0 <-----> ak4613 * (B) CPU1 -----> HDMI * * (A) aplay -D plughw:0,0 xxx.wav * (B) aplay -D plughw:0,1 xxx.wav * * (A) arecord -D plughw:0,0 xxx.wav */ / { sound_card: sound { compatible = "audio-graph-card"; label = "rcar-sound"; dais = <&rsnd_port0 /* (A) CPU0 <-> ak4613 */ &rsnd_port1 /* (B) CPU1 -> HDMI */ >; }; }; &ak4613 { #sound-dai-cells = <0>; port { /* * (A) CPU0 <-> ak4613 */ ak4613_endpoint: endpoint { remote-endpoint = <&rsnd_for_ak4613>; }; }; }; &hdmi0 { ports { port@2 { /* * (B) CPU1 -> HDMI */ dw_hdmi0_snd_in: endpoint { remote-endpoint = <&rsnd_for_hdmi>; }; }; }; }; &rcar_sound { ports { #address-cells = <1>; #size-cells = <0>; rsnd_port0: port@0 { /* * (A) CPU0 <-> ak4613 */ reg = <0>; rsnd_for_ak4613: endpoint { remote-endpoint = <&ak4613_endpoint>; bitclock-master; frame-master; playback = <&ssi0>, <&src0>, <&dvc0>; capture = <&ssi1>, <&src1>, <&dvc1>; }; }; rsnd_port1: port@1 { /* * (B) CPU1 -> HDMI */ reg = <1>; rsnd_for_hdmi: endpoint { remote-endpoint = <&dw_hdmi0_snd_in>; bitclock-master; frame-master; playback = <&ssi2>; }; }; }; };