tlv320aic31xx.txt

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    1 Texas Instruments - tlv320aic31xx Codec module
    2 
    3 The tlv320aic31xx serial control bus communicates through I2C protocols
    4 
    5 Required properties:
    6 
    7 - compatible - "string" - One of:
    8     "ti,tlv320aic310x" - Generic TLV320AIC31xx with mono speaker amp
    9     "ti,tlv320aic311x" - Generic TLV320AIC31xx with stereo speaker amp
   10     "ti,tlv320aic3100" - TLV320AIC3100 (mono speaker amp, no MiniDSP)
   11     "ti,tlv320aic3110" - TLV320AIC3110 (stereo speaker amp, no MiniDSP)
   12     "ti,tlv320aic3120" - TLV320AIC3120 (mono speaker amp, MiniDSP)
   13     "ti,tlv320aic3111" - TLV320AIC3111 (stereo speaker amp, MiniDSP)
   14     "ti,tlv320dac3100" - TLV320DAC3100 (no ADC, mono speaker amp, no MiniDSP)
   15     "ti,tlv320dac3101" - TLV320DAC3101 (no ADC, stereo speaker amp, no MiniDSP)
   16 
   17 - reg - <int> -  I2C slave address
   18 - HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply,
   19   DVDD-supply : power supplies for the device as covered in
   20   Documentation/devicetree/bindings/regulator/regulator.txt
   21 
   22 
   23 Optional properties:
   24 
   25 - reset-gpios - GPIO specification for the active low RESET input.
   26 - ai31xx-micbias-vg - MicBias Voltage setting
   27         1 or MICBIAS_2_0V - MICBIAS output is powered to 2.0V
   28         2 or MICBIAS_2_5V - MICBIAS output is powered to 2.5V
   29         3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD
   30         If this node is not mentioned or if the value is unknown, then
   31         micbias is set to 2.0V.
   32 - ai31xx-ocmv - output common-mode voltage setting
   33         0 - 1.35V,
   34         1 - 1.5V,
   35         2 - 1.65V,
   36         3 - 1.8V
   37 
   38 Deprecated properties:
   39 
   40 - gpio-reset - gpio pin number used for codec reset
   41 
   42 CODEC output pins:
   43   * HPL
   44   * HPR
   45   * SPL, devices with stereo speaker amp
   46   * SPR, devices with stereo speaker amp
   47   * SPK, devices with mono speaker amp
   48   * MICBIAS
   49 
   50 CODEC input pins:
   51   * MIC1LP, devices with ADC
   52   * MIC1RP, devices with ADC
   53   * MIC1LM, devices with ADC
   54   * AIN1, devices without ADC
   55   * AIN2, devices without ADC
   56 
   57 The pins can be used in referring sound node's audio-routing property.
   58 
   59 Example:
   60 #include <dt-bindings/gpio/gpio.h>
   61 #include <dt-bindings/sound/tlv320aic31xx.h>
   62 
   63 tlv320aic31xx: tlv320aic31xx@18 {
   64         compatible = "ti,tlv320aic311x";
   65         reg = <0x18>;
   66 
   67         ai31xx-micbias-vg = <MICBIAS_OFF>;
   68 
   69         reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;
   70 
   71         HPVDD-supply = <&regulator>;
   72         SPRVDD-supply = <&regulator>;
   73         SPLVDD-supply = <&regulator>;
   74         AVDD-supply = <&regulator>;
   75         IOVDD-supply = <&regulator>;
   76         DVDD-supply = <&regulator>;
   77 };

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