rt5640.txt

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    1 RT5640/RT5639 audio CODEC
    2 
    3 This device supports I2C only.
    4 
    5 Required properties:
    6 
    7 - compatible : One of "realtek,rt5640" or "realtek,rt5639".
    8 
    9 - reg : The I2C address of the device.
   10 
   11 - interrupts : The CODEC's interrupt output.
   12 
   13 Optional properties:
   14 
   15 - clocks: The phandle of the master clock to the CODEC
   16 - clock-names: Should be "mclk"
   17 
   18 - realtek,in1-differential
   19 - realtek,in2-differential
   20 - realtek,in3-differential
   21   Boolean. Indicate MIC1/2/3 input are differential, rather than single-ended.
   22 
   23 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
   24 
   25 - realtek,dmic1-data-pin
   26   0: dmic1 is not used
   27   1: using IN1P pin as dmic1 data pin
   28   2: using GPIO3 pin as dmic1 data pin
   29 
   30 - realtek,dmic2-data-pin
   31   0: dmic2 is not used
   32   1: using IN1N pin as dmic2 data pin
   33   2: using GPIO4 pin as dmic2 data pin
   34 
   35 - realtek,jack-detect-source
   36   u32. Valid values:
   37   0: jack-detect is not used
   38   1: Use GPIO1 for jack-detect
   39   2: Use JD1_IN4P for jack-detect
   40   3: Use JD2_IN4N for jack-detect
   41   4: Use GPIO2 for jack-detect
   42   5: Use GPIO3 for jack-detect
   43   6: Use GPIO4 for jack-detect
   44 
   45 - realtek,jack-detect-not-inverted
   46   bool. Normal jack-detect switches give an inverted signal, set this bool
   47   in the rare case you've a jack-detect switch which is not inverted.
   48 
   49 - realtek,over-current-threshold-microamp
   50   u32, micbias over-current detection threshold in µA, valid values are
   51   600, 1500 and 2000µA.
   52 
   53 - realtek,over-current-scale-factor
   54   u32, micbias over-current detection scale-factor, valid values are:
   55   0: Scale current by 0.5
   56   1: Scale current by 0.75
   57   2: Scale current by 1.0
   58   3: Scale current by 1.5
   59 
   60 Pins on the device (for linking into audio routes) for RT5639/RT5640:
   61 
   62   * DMIC1
   63   * DMIC2
   64   * MICBIAS1
   65   * IN1P
   66   * IN1N
   67   * IN2P
   68   * IN2N
   69   * IN3P
   70   * IN3N
   71   * HPOL
   72   * HPOR
   73   * LOUTL
   74   * LOUTR
   75   * SPOLP
   76   * SPOLN
   77   * SPORP
   78   * SPORN
   79 
   80 Additional pins on the device for RT5640:
   81 
   82   * MONOP
   83   * MONON
   84 
   85 Example:
   86 
   87 rt5640 {
   88         compatible = "realtek,rt5640";
   89         reg = <0x1c>;
   90         interrupt-parent = <&gpio>;
   91         interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_HIGH>;
   92         realtek,ldo1-en-gpios =
   93                 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
   94 };

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sys/contrib/device-tree/Bindings/sound/rt5640.txt