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. - ai31xx-ocmv - output common-mode voltage setting 0 - 1.35V, 1 - 1.5V, 2 - 1.65V, 3 - 1.8V 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 #include tlv320aic31xx: tlv320aic31xx@18 { compatible = "ti,tlv320aic311x"; reg = <0x18>; ai31xx-micbias-vg = ; reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>; HPVDD-supply = <®ulator>; SPRVDD-supply = <®ulator>; SPLVDD-supply = <®ulator>; AVDD-supply = <®ulator>; IOVDD-supply = <®ulator>; DVDD-supply = <®ulator>; };