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-ASoC Simple SCU Sound Card
-
-Simple SCU Sound Card is "Simple Sound Card" + "ALSA DPCM".
-For example, you can use this driver if you want to exchange sampling rate convert,
-Mixing, etc...
-
-Required properties:
-
-- compatible : "simple-scu-audio-card"
- "renesas,rsrc-card"
-Optional properties:
-
-- simple-audio-card,name : see simple-audio-card.txt
-- simple-audio-card,cpu : see simple-audio-card.txt
-- simple-audio-card,codec : see simple-audio-card.txt
-
-Optional subnode properties:
-
-- simple-audio-card,format : see simple-audio-card.txt
-- simple-audio-card,frame-master : see simple-audio-card.txt
-- simple-audio-card,bitclock-master : see simple-audio-card.txt
-- simple-audio-card,bitclock-inversion : see simple-audio-card.txt
-- simple-audio-card,frame-inversion : see simple-audio-card.txt
-- simple-audio-card,convert-rate : platform specified sampling rate convert
-- simple-audio-card,convert-channels : platform specified converted channel size (2 - 8 ch)
-- simple-audio-card,prefix : see routing
-- simple-audio-card,widgets : Please refer to widgets.txt.
-- simple-audio-card,routing : A list of the connections between audio components.
- Each entry is a pair of strings, the first being the connection's sink,
- the second being the connection's source. Valid names for sources.
- use audio-prefix if some components is using same sink/sources naming.
- it can be used if compatible was "renesas,rsrc-card";
-
-Required CPU/CODEC subnodes properties:
-
-- sound-dai : see simple-audio-card.txt
-
-Optional CPU/CODEC subnodes properties:
-
-- clocks / system-clock-frequency : see simple-audio-card.txt
-
-Example 1. Sampling Rate Conversion
-
-sound {
- compatible = "simple-scu-audio-card";
-
- simple-audio-card,name = "rsnd-ak4643";
- simple-audio-card,format = "left_j";
- simple-audio-card,bitclock-master = <&sndcodec>;
- simple-audio-card,frame-master = <&sndcodec>;
-
- simple-audio-card,convert-rate = <48000>;
-
- simple-audio-card,prefix = "ak4642";
- simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
- "DAI0 Capture", "ak4642 Capture";
-
- sndcpu: simple-audio-card,cpu {
- sound-dai = <&rcar_sound>;
- };
-
- sndcodec: simple-audio-card,codec {
- sound-dai = <&ak4643>;
- system-clock-frequency = <11289600>;
- };
-};
-
-Example 2. 2 CPU 1 Codec (Mixing)
-
-sound {
- compatible = "simple-scu-audio-card";
-
- simple-audio-card,name = "rsnd-ak4643";
- simple-audio-card,format = "left_j";
- simple-audio-card,bitclock-master = <&dpcmcpu>;
- simple-audio-card,frame-master = <&dpcmcpu>;
-
- simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
- "ak4642 Playback", "DAI1 Playback";
-
- dpcmcpu: cpu@0 {
- sound-dai = <&rcar_sound 0>;
- };
-
- cpu@1 {
- sound-dai = <&rcar_sound 1>;
- };
-
- codec {
- prefix = "ak4642";
- sound-dai = <&ak4643>;
- clocks = <&audio_clock>;
- };
-};