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
  22 - realtek,in1-differential
  23 - realtek,in2-differential
  24 - realtek,lout1-differential
  25 - realtek,lout2-differential
  26 - realtek,lout3-differential
  27   Boolean. Indicate MIC1/2 input and LOUT1/2/3 outputs are differential,
  28   rather than single-ended.
  29
  30 - realtek,gpio-config
  31   Array of six 8bit elements that configures GPIO.
  32     0 - floating (reset value)
  33     1 - pull down
  34     2 - pull up
  35
  36 - realtek,jd1-gpio
  37   Configures GPIO Mic Jack detection 1.
  38   Select 0 ~ 3 as OFF, GPIO1, GPIO2 and GPIO3 respectively.
  39
  40 - realtek,jd2-gpio
  41 - realtek,jd3-gpio
  42   Configures GPIO Mic Jack detection 2 and 3.
  43   Select 0 ~ 3 as OFF, GPIO4, GPIO5 and GPIO6 respectively.
  44
  45 Pins on the device (for linking into audio routes):
  46
  47   * IN1P
  48   * IN1N
  49   * IN2P
  50   * IN2N
  51   * MICBIAS1
  52   * DMIC1
  53   * DMIC2
  54   * DMIC3
  55   * DMIC4
  56   * LOUT1
  57   * LOUT2
  58   * LOUT3
  59
  60 Example:
  61
  62 rt5677 {
  63         compatible = "realtek,rt5677";
  64         reg = <0x2c>;
  65         interrupt-parent = <&gpio>;
  66         interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
  67
  68         gpio-controller;
  69         #gpio-cells = <2>;
  70
  71         realtek,pow-ldo2-gpio =
  72                 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
  73         realtek,in1-differential = "true";
  74         realtek,gpio-config = /bits/ 8  <0 0 0 0 0 2>;   /* pull up GPIO6 */
  75         realtek,jd2-gpio = <3>;  /* Enables Jack detection for GPIO6 */
  76 };