linux/Documentation/devicetree/bindings/mfd/twl4030-audio.txt
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   1Texas Instruments TWL family (twl4030) audio module
   2
   3The audio module inside the TWL family consist of an audio codec and a vibra
   4driver.
   5
   6Required properties:
   7- compatible : must be "ti,twl4030-audio"
   8
   9Optional properties, nodes:
  10
  11Audio functionality:
  12- codec { }: Need to be present if the audio functionality is used. Within this
  13             section the following options can be used:
  14- ti,digimic_delay: Delay need after enabling the digimic to reduce artifacts
  15                    from the start of the recorded sample (in ms)
  16-ti,ramp_delay_value: HS ramp delay configuration to reduce pop noise
  17-ti,hs_extmute: Use external mute for HS pop reduction
  18-ti,hs_extmute_gpio: Use external GPIO to control the external mute
  19-ti,offset_cncl_path: Offset cancellation path selection, refer to TRM for the
  20                      valid values.
  21
  22Vibra functionality
  23- ti,enable-vibra: Need to be set to <1> if the vibra functionality is used. if
  24                   missing or it is 0, the vibra functionality is disabled.
  25
  26Example:
  27&i2c1 {
  28        clock-frequency = <2600000>;
  29
  30        twl: twl@48 {
  31                reg = <0x48>;
  32                interrupts = <7>; /* SYS_NIRQ cascaded to intc */
  33                interrupt-parent = <&intc>;
  34
  35                twl_audio: audio {
  36                        compatible = "ti,twl4030-audio";
  37
  38                        ti,enable-vibra = <1>;
  39
  40                        codec {
  41                                ti,ramp_delay_value = <3>;
  42                        };
  43
  44                };
  45        };
  46};
  47