Kernel-3.10.0-957.el7_twl4030-audio

Texas Instruments TWL family (twl4030) audio module

The audio module inside the TWL family consist of an audio codec and a vibra
driver.

Required properties:

  • compatible : must be “ti,twl4030-audio”

Optional properties, nodes:

Audio functionality:

  • codec { }: Need to be present if the audio functionality is used. Within this
       section the following options can be used:
    
  • ti,digimic_delay: Delay need after enabling the digimic to reduce artifacts
          from the start of the recorded sample (in ms)
    
  • ti,ramp_delay_value: HS ramp delay configuration to reduce pop noise
  • ti,hs_extmute: Use external mute for HS pop reduction
  • ti,hs_extmute_gpio: Use external GPIO to control the external mute
  • ti,offset_cncl_path: Offset cancellation path selection, refer to TRM for the
             valid values.
    

Vibra functionality

  • ti,enable-vibra: Need to be set to <1> if the vibra functionality is used. if
         missing or it is 0, the vibra functionality is disabled.
    

Example:
&i2c1 {
clock-frequency = <2600000>;

twl: twl@48 {
    reg = <0x48>;
    interrupts = <7>; /* SYS_NIRQ cascaded to intc */
    interrupt-parent = <&intc>;

    twl_audio: audio {
        compatible = "ti,twl4030-audio";

        ti,enable-vibra = <1>;

        codec {
            ti,ramp_delay_value = <3>;
        };

    };
};

};