linux/Documentation/devicetree/bindings/sound/wm8731.txt
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   1WM8731 audio CODEC
   2
   3This device supports both I2C and SPI (configured with pin strapping
   4on the board).
   5
   6Required properties:
   7
   8  - compatible : "wlf,wm8731"
   9
  10  - reg : the I2C address of the device for I2C, the chip select
  11          number for SPI.
  12
  13Example:
  14
  15codec: wm8731@1a {
  16        compatible = "wlf,wm8731";
  17        reg = <0x1a>;
  18};
  19