Kernel-4.18.0-80.el8_tlv320aic31xx

Texas Instruments - tlv320aic31xx Codec module

The tlv320aic31xx serial control bus communicates through I2C protocols

Required properties:

• compatible - “string” - One of:
  “ti,tlv320aic310x” - Generic TLV320AIC31xx with mono speaker amp
  “ti,tlv320aic311x” - Generic TLV320AIC31xx with stereo speaker amp
  “ti,tlv320aic3100” - TLV320AIC3100 (mono speaker amp, no MiniDSP)
  “ti,tlv320aic3110” - TLV320AIC3110 (stereo speaker amp, no MiniDSP)
  “ti,tlv320aic3120” - TLV320AIC3120 (mono speaker amp, MiniDSP)
  “ti,tlv320aic3111” - TLV320AIC3111 (stereo speaker amp, MiniDSP)
  “ti,tlv320dac3100” - TLV320DAC3100 (no ADC, mono speaker amp, no MiniDSP)
  “ti,tlv320dac3101” - TLV320DAC3101 (no ADC, stereo speaker amp, no MiniDSP)

• reg - - I2C slave address

• HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply,
  DVDD-supply : power supplies for the device as covered in
  Documentation/devicetree/bindings/regulator/regulator.txt

Optional properties:

• reset-gpios - GPIO specification for the active low RESET input.
• ai31xx-micbias-vg - MicBias Voltage setting

    1 or MICBIAS_2_0V - MICBIAS output is powered to 2.0V
    2 or MICBIAS_2_5V - MICBIAS output is powered to 2.5V
    3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
  

  If this node is not mentioned or if the value is unknown, then
  micbias is set to 2.0V.

Deprecated properties:

• gpio-reset - gpio pin number used for codec reset

CODEC output pins:

• HPL
• HPR
• SPL, devices with stereo speaker amp
• SPR, devices with stereo speaker amp
• SPK, devices with mono speaker amp
• MICBIAS

CODEC input pins:

• MIC1LP, devices with ADC
• MIC1RP, devices with ADC
• MIC1LM, devices with ADC
• AIN1, devices without ADC
• AIN2, devices without ADC

The pins can be used in referring sound node’s audio-routing property.

Example:
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/sound/tlv320aic31xx-micbias.h>

tlv320aic31xx: tlv320aic31xx@18 {
compatible = “ti,tlv320aic311x”;
reg = <0x18>;

ai31xx-micbias-vg = <MICBIAS_OFF>;

reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;

HPVDD-supply = <&regulator>;
SPRVDD-supply = <&regulator>;
SPLVDD-supply = <&regulator>;
AVDD-supply = <&regulator>;
IOVDD-supply = <&regulator>;
DVDD-supply = <&regulator>;

};