Bindings/sound/rt5663.txt

   1 RT5663 audio CODEC
   2
   3 This device supports I2C only.
   4
   5 Required properties:
   6
   7 - compatible : "realtek,rt5663".
   8
   9 - reg : The I2C address of the device.
  10
  11 - interrupts : The CODEC's interrupt output.
  12
  13 - avdd-supply: Power supply for AVDD, providing 1.8V.
  14
  15 - cpvdd-supply: Power supply for CPVDD, providing 3.5V.
  16
  17 Optional properties:
  18
  19 - "realtek,dc_offset_l_manual"
  20 - "realtek,dc_offset_r_manual"
  21 - "realtek,dc_offset_l_manual_mic"
  22 - "realtek,dc_offset_r_manual_mic"
  23   Based on the different PCB layout, add the manual offset value to
  24   compensate the DC offset for each L and R channel, and they are different
  25   between headphone and headset.
  26 - "realtek,impedance_sensing_num"
  27   The matrix row number of the impedance sensing table.
  28   If the value is 0, it means the impedance sensing is not supported.
  29 - "realtek,impedance_sensing_table"
  30   The matrix rows of the impedance sensing table are consisted by impedance
  31   minimum, impedance maximum, volume, DC offset w/o and w/ mic of each L and
  32   R channel accordingly. Example is shown as following.
  33   <   0    300  7  0xffd160  0xffd1c0  0xff8a10  0xff8ab0
  34     301  65535  4  0xffe470  0xffe470  0xffb8e0  0xffb8e0>
  35   The first and second column are defined for the impedance range. If the
  36   detected impedance value is in the range, then the volume value of the
  37   third column will be set to codec. In our codec design, each volume value
  38   should compensate different DC offset to avoid the pop sound, and it is
  39   also different between headphone and headset. In the example, the
  40   "realtek,impedance_sensing_num" is 2. It means that there are 2 ranges of
  41   impedance in the impedance sensing function.
  42
  43 Pins on the device (for linking into audio routes) for RT5663:
  44
  45   * IN1P
  46   * IN1N
  47   * IN2P
  48   * IN2N
  49   * HPOL
  50   * HPOR
  51
  52 Example:
  53
  54 rt5663: codec@12 {
  55         compatible = "realtek,rt5663";
  56         reg = <0x12>;
  57         interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
  58         avdd-supply = <&pp1800_a_alc5662>;
  59         cpvdd-supply = <&pp3500_a_alc5662>;
  60 };