Bindings/sound/rt5651.txt

   1 RT5651 audio CODEC
   2
   3 This device supports I2C only.
   4
   5 Required properties:
   6
   7 - compatible : "realtek,rt5651".
   8
   9 - reg : The I2C address of the device.
  10
  11 Optional properties:
  12
  13 - realtek,in2-differential
  14   Boolean. Indicate MIC2 input are differential, rather than single-ended.
  15
  16 - realtek,dmic-en
  17   Boolean. true if dmic is used.
  18
  19 - realtek,jack-detect-source
  20   u32. Valid values:
  21   1: Use JD1_1 pin for jack-detect
  22   2: Use JD1_2 pin for jack-detect
  23   3: Use JD2 pin for jack-detect
  24
  25 - realtek,jack-detect-not-inverted
  26   bool. Normal jack-detect switches give an inverted (active-low) signal,
  27   set this bool in the rare case you've a jack-detect switch which is not
  28   inverted.
  29
  30 - realtek,over-current-threshold-microamp
  31   u32, micbias over-current detection threshold in µA, valid values are
  32   600, 1500 and 2000µA.
  33
  34 - realtek,over-current-scale-factor
  35   u32, micbias over-current detection scale-factor, valid values are:
  36   0: Scale current by 0.5
  37   1: Scale current by 0.75
  38   2: Scale current by 1.0
  39   3: Scale current by 1.5
  40
  41 Pins on the device (for linking into audio routes) for RT5651:
  42
  43   * DMIC L1
  44   * DMIC R1
  45   * IN1P
  46   * IN2P
  47   * IN2N
  48   * IN3P
  49   * HPOL
  50   * HPOR
  51   * LOUTL
  52   * LOUTR
  53   * PDML
  54   * PDMR
  55
  56 Example:
  57
  58 rt5651: codec@1a {
  59         compatible = "realtek,rt5651";
  60         reg = <0x1a>;
  61         realtek,dmic-en = "true";
  62         realtek,in2-diff = "false";
  63 };