78 lines
2.4 KiB
Plaintext
78 lines
2.4 KiB
Plaintext
Texas Instruments - tlv320aic31xx Codec module
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The tlv320aic31xx serial control bus communicates through I2C protocols
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Required properties:
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- compatible - "string" - One of:
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"ti,tlv320aic310x" - Generic TLV320AIC31xx with mono speaker amp
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"ti,tlv320aic311x" - Generic TLV320AIC31xx with stereo speaker amp
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"ti,tlv320aic3100" - TLV320AIC3100 (mono speaker amp, no MiniDSP)
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"ti,tlv320aic3110" - TLV320AIC3110 (stereo speaker amp, no MiniDSP)
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"ti,tlv320aic3120" - TLV320AIC3120 (mono speaker amp, MiniDSP)
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"ti,tlv320aic3111" - TLV320AIC3111 (stereo speaker amp, MiniDSP)
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"ti,tlv320dac3100" - TLV320DAC3100 (no ADC, mono speaker amp, no MiniDSP)
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"ti,tlv320dac3101" - TLV320DAC3101 (no ADC, stereo speaker amp, no MiniDSP)
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- reg - <int> - I2C slave address
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- HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply,
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DVDD-supply : power supplies for the device as covered in
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Documentation/devicetree/bindings/regulator/regulator.txt
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Optional properties:
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- reset-gpios - GPIO specification for the active low RESET input.
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- ai31xx-micbias-vg - MicBias Voltage setting
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1 or MICBIAS_2_0V - MICBIAS output is powered to 2.0V
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2 or MICBIAS_2_5V - MICBIAS output is powered to 2.5V
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3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
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If this node is not mentioned or if the value is unknown, then
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micbias is set to 2.0V.
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- ai31xx-ocmv - output common-mode voltage setting
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0 - 1.35V,
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1 - 1.5V,
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2 - 1.65V,
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3 - 1.8V
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Deprecated properties:
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- gpio-reset - gpio pin number used for codec reset
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CODEC output pins:
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* HPL
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* HPR
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* SPL, devices with stereo speaker amp
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* SPR, devices with stereo speaker amp
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* SPK, devices with mono speaker amp
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* MICBIAS
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CODEC input pins:
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* MIC1LP, devices with ADC
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* MIC1RP, devices with ADC
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* MIC1LM, devices with ADC
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* AIN1, devices without ADC
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* AIN2, devices without ADC
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The pins can be used in referring sound node's audio-routing property.
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Example:
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/sound/tlv320aic31xx-micbias.h>
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tlv320aic31xx: tlv320aic31xx@18 {
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compatible = "ti,tlv320aic311x";
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reg = <0x18>;
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ai31xx-micbias-vg = <MICBIAS_OFF>;
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reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;
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HPVDD-supply = <®ulator>;
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SPRVDD-supply = <®ulator>;
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SPLVDD-supply = <®ulator>;
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AVDD-supply = <®ulator>;
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IOVDD-supply = <®ulator>;
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DVDD-supply = <®ulator>;
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};
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