linux-sg2042/Documentation/devicetree/bindings/sound/arndale.txt

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Audio Binding for Arndale boards
Required properties:
- compatible : Can be the following,
"samsung,arndale-rt5631"
- samsung,audio-cpu: The phandle of the Samsung I2S controller
- samsung,audio-codec: The phandle of the audio codec
Optional:
- samsung,model: The name of the sound-card
Arndale Boards has many audio daughter cards, one of them is
rt5631/alc5631. Below example shows audio bindings for rt5631/
alc5631 based codec.
Example:
sound {
compatible = "samsung,arndale-rt5631";
samsung,audio-cpu = <&i2s0>
samsung,audio-codec = <&rt5631>;
};