Bindings/sound/tlv320aic31xx.txt

   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 };