&sound { /* pdm + i2svad */ simple-audio-card,dai-link@1 { reg = <1>; format = "i2s"; bitclock-master = <&sndcodec1>; frame-master = <&sndcodec1>; cpu { sound-dai = <&i2svad>; }; sndcodec1: codec { sound-dai = <&pdm>; }; }; };