Audio-Graph-SCU-Card: Audio-Graph-SCU-Card is "Audio-Graph-Card" + "ALSA DPCM". It is based on common bindings for device graphs. see ${LINUX}/Documentation/devicetree/bindings/graph.txt Basically, Audio-Graph-SCU-Card property is same as Simple-Card / Simple-SCU-Card / Audio-Graph-Card. see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt ${LINUX}/Documentation/devicetree/bindings/sound/simple-scu-card.txt ${LINUX}/Documentation/devicetree/bindings/sound/audio-graph-card.txt Below are same as Simple-Card / Audio-Graph-Card. - label - dai-format - frame-master - bitclock-master - bitclock-inversion - frame-inversion - dai-tdm-slot-num - dai-tdm-slot-width - clocks / system-clock-frequency Below are same as Simple-SCU-Card. - convert-rate - convert-channels - prefix - routing Required properties: - compatible : "audio-graph-scu-card"; - dais : list of CPU DAI port{s} Example 1. Sampling Rate Conversion sound_card { compatible = "audio-graph-scu-card"; label = "sound-card"; prefix = "codec"; routing = "codec Playback", "DAI0 Playback", "codec Playback", "DAI1 Playback"; convert-rate = <48000>; dais = <&cpu_port>; }; audio-codec { ... port { codec_endpoint: endpoint { remote-endpoint = <&cpu_endpoint>; }; }; }; dai-controller { ... cpu_port: port { cpu_endpoint: endpoint { remote-endpoint = <&codec_endpoint>; dai-format = "left_j"; ... }; }; }; Example 2. 2 CPU 1 Codec (Mixing) sound_card { compatible = "audio-graph-scu-card"; label = "sound-card"; prefix = "codec"; routing = "codec Playback", "DAI0 Playback", "codec Playback", "DAI1 Playback"; convert-rate = <48000>; dais = <&cpu_port0 &cpu_port1>; }; audio-codec { ... port { codec_endpoint: endpoint { remote-endpoint = <&cpu_endpoint0>; }; }; }; dai-controller { ... ports { cpu_port0: port { cpu_endpoint0: endpoint { remote-endpoint = <&codec_endpoint>; dai-format = "left_j"; ... }; }; cpu_port1: port { cpu_endpoint1: endpoint { dai-format = "left_j"; ... }; }; }; };