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WM8753 audio CODEC

This device supports both I2C and SPI (configured with pin strapping
on the board).

Required properties:

  - compatible : "wlf,wm8753"

  - reg : the I2C address of the device for I2C, the chip select
          number for SPI.

Pins on the device (for linking into audio routes):

  * LOUT1
  * LOUT2
  * ROUT1
  * ROUT2
  * MONO1
  * MONO2
  * OUT3
  * OUT4
  * LINE1
  * LINE2
  * RXP
  * RXN
  * ACIN
  * ACOP
  * MIC1N
  * MIC1
  * MIC2N
  * MIC2
  * Mic Bias

Example:

codec: wm8753@1a {
	compatible = "wlf,wm8753";
	reg = <0x1a>;
};