From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- .../bindings/sound/simple-graph-scu-card.txt | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt
diff --git a/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt b/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt new file mode 100644 index 0000000..81f64e0 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/simple-graph-scu-card.txt @@ -0,0 +1,66 @@ +Simple-Graph-SCU-Card: + +Simple-Graph-SCU-Card specifies audio DAI connections of SoC <-> codec. +It is based on common bindings for device graphs. +see ${LINUX}/Documentation/devicetree/bindings/graph.txt + +Basically, Simple-Graph-SCU-Card is same as Simple-Card / Simple-Graph-Card. +see ${LINUX}/Documentation/devicetree/bindings/sound/simple-card.txt + ${LINUX}/Documentation/devicetree/bindings/sound/simple-graph-card.txt + +Main difference is that Simple-Graph-SCU-Card can use multi CPU. + +Required properties: + +- compatible : "asoc-simple-graph-scu-card"; +- type : "sound"; +- simple-audio-card,routing : see simple-card.txt + +Example + +ak4643: codec@12 { + compatible = "asahi-kasei,ak4643"; + ... + port { + type = "sound"; + ak4643_fe: endpoint@0 { + remote-endpoint = <&rsnd_fe>; + clocks = <&audio_clock>; + }; + ak4643_be: endpoint@1 { + remote-endpoint = <&rsnd_be>; + }; + }; +}; + +rcar_sound { + ... + ports { + compatible = "asoc-simple-graph-scu-card"; + simple-audio-card,name = "graph-sound"; + simple-audio-card,format = "left_j"; + simple-audio-card,bitclock-master = <&rsnd_fe>; + simple-audio-card,frame-master = <&rsnd_fe>; + simple-audio-card,convert-rate = <48000>; + simple-audio-card,convert-channels = <2>; + simple-audio-card,prefix = "ak4642"; + simple-audio-card,routing = + "ak4642 Playback", "DAI0 Playback", + "ak4642 Playback", "DAI1 Playback"; + + port@0 { + type = "sound"; + rsnd_fe: endpoint@0 { + remote-endpoint = <&ak4643_fe>; + playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>; + }; + }; + port@1 { + type = "sound"; + rsnd_be: endpoint@1 { + remote-endpoint = <&ak4643_be>; + playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>; + }; + }; + }; +};