// SPDX-License-Identifier: GPL-2.0 /* * Device Tree for ULCB + Kingfisher + Simple Audio Card * * Copyright (C) 2022 Renesas Electronics Corp. */ /* * (A) CPU0 <----> ak4613 * (B) CPU1 ----> HDMI * (C) CPU2 ----> PCM3168A-p * (D) CPU3 <---- PCM3168A-c * * (A) aplay -D plughw:0,0 xxx.wav * (B) aplay -D plughw:0,1 xxx.wav * (C) aplay -D plughw:1,0 xxx.wav * * (A) arecord -D plughw:0,0 xxx.wav * (D) arecord -D plughw:1,1 xxx.wav */ / { sound_card_kf: expand-sound { compatible = "simple-audio-card"; label = "snd-kf"; #address-cells = <1>; #size-cells = <0>; /* * (C) CPU2 -> PCM3168A-p */ simple-audio-card,dai-link@0 { reg = <0>; cpu { bitclock-master; frame-master; dai-tdm-slot-num = <8>; sound-dai = <&rcar_sound 2>; }; codec { mclk-fs = <512>; sound-dai = <&pcm3168a 0>; }; }; /* * (D) CPU3 <- PCM3168A-c */ simple-audio-card,dai-link@1 { reg = <1>; cpu { bitclock-master; frame-master; dai-tdm-slot-num = <6>; sound-dai = <&rcar_sound 3>; }; codec { mclk-fs = <512>; sound-dai = <&pcm3168a 1>; }; }; }; }; &pcm3168a { /* * (C) CPU2 -> PCM3168A-p * (D) CPU3 <- PCM3168A-c */ #sound-dai-cells = <1>; }; &rcar_sound { rcar_sound,dai@1 { reg = <1>; /* * (C) CPU2 -> PCM3168A-p */ dai2 { playback = <&ssi3>; }; /* * (D) CPU3 <- PCM3168A-c */ dai3 { capture = <&ssi4>; }; }; };