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u-boot/doc/device-tree-bindings/exynos/sound.txt

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Exynos Sound Subsystem
The device node for sound subsytem which contains codec and i2s block
that is a part of Exynos5250
Required properties :
- compatible : Should be "samsung,exynos-sound" for sound
- samsung,i2s-epll-clock-frequency : epll clock output frequency in Hz
- samsung,i2s-sampling-rate : sampling rate, default is 48000
- samsung,i2s-bits-per-sample : sample width, defalut is 16 bit
- samsung,i2s-channels : nummber of channels, default is 2
- samsung,i2s-lr-clk-framesize : lr clock frame size
- samsung,i2s-bit-clk-framesize : bit clock frame size
- samsung,codec-type : sound codec type
Example:
sound@12d60000 {
compatible = "samsung,exynos-sound"
samsung,i2s-epll-clock-frequency = <192000000>;
samsung,i2s-sampling-rate = <48000>;
samsung,i2s-bits-per-sample = <16>;
samsung,i2s-channels = <2>;
samsung,i2s-lr-clk-framesize = <256>;
samsung,i2s-bit-clk-framesize = <32>;
samsung,codec-type = "wm8994";
};