Documentation/devicetree/bindings/sound/rt5677.txt

   1 RT5677 audio CODEC
   2
   3 This device supports I2C only.
   4
   5 Required properties:
   6
   7 - compatible : "realtek,rt5677".
   8
   9 - reg : The I2C address of the device.
  10
  11 - interrupts : The CODEC's interrupt output.
  12
  13 - gpio-controller : Indicates this device is a GPIO controller.
  14
  15 - #gpio-cells : Should be two. The first cell is the pin number and the
  16   second cell is used to specify optional parameters (currently unused).
  17
  18 Optional properties:
  19
  20 - realtek,pow-ldo2-gpio : The GPIO that controls the CODEC's POW_LDO2 pin.
  21 - realtek,reset-gpio : The GPIO that controls the CODEC's RESET pin.
  22
  23 - realtek,in1-differential
  24 - realtek,in2-differential
  25 - realtek,lout1-differential
  26 - realtek,lout2-differential
  27 - realtek,lout3-differential
  28   Boolean. Indicate MIC1/2 input and LOUT1/2/3 outputs are differential,
  29   rather than single-ended.
  30
  31 - realtek,gpio-config
  32   Array of six 8bit elements that configures GPIO.
  33     0 - floating (reset value)
  34     1 - pull down
  35     2 - pull up
  36
  37 - realtek,jd1-gpio
  38   Configures GPIO Mic Jack detection 1.
  39   Select 0 ~ 3 as OFF, GPIO1, GPIO2 and GPIO3 respectively.
  40
  41 - realtek,jd2-gpio
  42 - realtek,jd3-gpio
  43   Configures GPIO Mic Jack detection 2 and 3.
  44   Select 0 ~ 3 as OFF, GPIO4, GPIO5 and GPIO6 respectively.
  45
  46 Pins on the device (for linking into audio routes):
  47
  48   * IN1P
  49   * IN1N
  50   * IN2P
  51   * IN2N
  52   * MICBIAS1
  53   * DMIC1
  54   * DMIC2
  55   * DMIC3
  56   * DMIC4
  57   * LOUT1
  58   * LOUT2
  59   * LOUT3
  60
  61 Example:
  62
  63 rt5677 {
  64         compatible = "realtek,rt5677";
  65         reg = <0x2c>;
  66         interrupt-parent = <&gpio>;
  67         interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
  68
  69         gpio-controller;
  70         #gpio-cells = <2>;
  71
  72         realtek,pow-ldo2-gpio =
  73                 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
  74         realtek,reset-gpio = <&gpio TEGRA_GPIO(BB, 3) GPIO_ACTIVE_LOW>;
  75         realtek,in1-differential = "true";
  76         realtek,gpio-config = /bits/ 8  <0 0 0 0 0 2>;   /* pull up GPIO6 */
  77         realtek,jd2-gpio = <3>;  /* Enables Jack detection for GPIO6 */
  78 };