Conexant CX20721/CX20723/CX7601 audio CODEC

The devices support I2C only.

Required properties:

  - compatible : One of "cnxt,cx20721", "cnxt,cx20723", "cnxt,cx7601".

  - reg : the I2C address of the device for I2C, it should be <0x33>

Optional properties:

  - clocks : phandle and clock specifier for codec MCLK.
  - clock-names : Clock name string for 'clocks' attribute, should be "mclk".

CODEC output pins:
  "PORTA"	- Headphone
  "PORTG"	- Class-D output
  "PORTE"	- Line out

CODEC output pins for Conexant DSP chip:
  "AEC REF"	- AEC reference signal

CODEC input pins:
  "PORTB"	- Analog mic
  "PORTC"	- Digital mic
  "PORTD"	- Headset mic

Example:

codec: cx20721@33 {
	compatible = "cnxt,cx20721";
	reg = <0x33>;
	clocks = <&sco>;
	clock-names = "mclk";
};
