tlv320aic3x.txt

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    1 Texas Instruments - tlv320aic3x Codec module
    2 
    3 The tlv320aic3x serial control bus communicates through both I2C and SPI bus protocols
    4 
    5 Required properties:
    6 
    7 - compatible - "string" - One of:
    8     "ti,tlv320aic3x" - Generic TLV320AIC3x device
    9     "ti,tlv320aic33" - TLV320AIC33
   10     "ti,tlv320aic3007" - TLV320AIC3007
   11     "ti,tlv320aic3106" - TLV320AIC3106
   12     "ti,tlv320aic3104" - TLV320AIC3104
   13 
   14 
   15 - reg - <int> -  I2C slave address
   16 
   17 
   18 Optional properties:
   19 
   20 - reset-gpios - GPIO specification for the active low RESET input.
   21 - ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
   22                                     - Not supported on tlv320aic3104
   23 - ai3x-micbias-vg - MicBias Voltage required.
   24         1 - MICBIAS output is powered to 2.0V,
   25         2 - MICBIAS output is powered to 2.5V,
   26         3 - MICBIAS output is connected to AVDD,
   27         If this node is not mentioned or if the value is incorrect, then MicBias
   28         is powered down.
   29 - ai3x-ocmv - Output Common-Mode Voltage selection:
   30         0 - 1.35V,
   31         1 - 1.5V,
   32         2 - 1.65V,
   33         3 - 1.8V
   34 - AVDD-supply, IOVDD-supply, DRVDD-supply, DVDD-supply : power supplies for the
   35   device as covered in Documentation/devicetree/bindings/regulator/regulator.txt
   36 
   37 Deprecated properties:
   38 
   39 - gpio-reset - gpio pin number used for codec reset
   40 
   41 CODEC output pins:
   42   * LLOUT
   43   * RLOUT
   44   * MONO_LOUT
   45   * HPLOUT
   46   * HPROUT
   47   * HPLCOM
   48   * HPRCOM
   49 
   50 CODEC input pins for TLV320AIC3104:
   51   * MIC2L
   52   * MIC2R
   53   * LINE1L
   54   * LINE1R
   55 
   56 CODEC input pins for other compatible codecs:
   57   * MIC3L
   58   * MIC3R
   59   * LINE1L
   60   * LINE2L
   61   * LINE1R
   62   * LINE2R
   63 
   64 The pins can be used in referring sound node's audio-routing property.
   65 
   66 I2C example:
   67 
   68 #include <dt-bindings/gpio/gpio.h>
   69 
   70 tlv320aic3x: tlv320aic3x@1b {
   71         compatible = "ti,tlv320aic3x";
   72         reg = <0x1b>;
   73 
   74         reset-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>;
   75 
   76         AVDD-supply = <&regulator>;
   77         IOVDD-supply = <&regulator>;
   78         DRVDD-supply = <&regulator>;
   79         DVDD-supply = <&regulator>;
   80 };
   81 
   82 SPI example:
   83 
   84 spi0: spi@f0000000 {
   85         tlv320aic3x: codec@0 {
   86                 compatible = "ti,tlv320aic3x";
   87                 reg = <0>; /* CS number */
   88                 #sound-dai-cells = <0>;
   89                 spi-max-frequency = <1000000>;
   90 
   91                 AVDD-supply = <&regulator>;
   92                 IOVDD-supply = <&regulator>;
   93                 DRVDD-supply = <&regulator>;
   94                 DVDD-supply = <&regulator>;
   95                 ai3x-ocmv = <0>;
   96         };
   97 };

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