linux/Documentation/devicetree/bindings/sound/ti,tas5086.txt
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   1Texas Instruments TAS5086 6-channel PWM Processor
   2
   3Required properties:
   4
   5 - compatible:          Should contain "ti,tas5086".
   6 - reg:                 The i2c address. Should contain <0x1b>.
   7
   8Optional properties:
   9
  10 - reset-gpio:          A GPIO spec to define which pin is connected to the
  11                        chip's !RESET pin. If specified, the driver will
  12                        assert a hardware reset at probe time.
  13
  14 - ti,charge-period:    This property should contain the time in microseconds
  15                        that closely matches the external single-ended
  16                        split-capacitor charge period. The hardware chip
  17                        waits for this period of time before starting the
  18                        PWM signals. This helps reduce pops and clicks.
  19
  20                        When not specified, the hardware default of 1300ms
  21                        is retained.
  22
  23 - ti,mid-z-channel-X:  Boolean properties, X being a number from 1 to 6.
  24                        If given, channel X will start with the Mid-Z start
  25                        sequence, otherwise the default Low-Z scheme is used.
  26
  27                        The correct configuration depends on how the power
  28                        stages connected to the PWM output pins work. Not all
  29                        power stages are compatible to Mid-Z - please refer
  30                        to the datasheets for more details.
  31
  32                        Most systems should not set any of these properties.
  33
  34Examples:
  35
  36        i2c_bus {
  37                tas5086@1b {
  38                        compatible = "ti,tas5086";
  39                        reg = <0x1b>;
  40                        reset-gpio = <&gpio 23 0>;
  41                        ti,charge-period = <156000>;
  42                };
  43        };
  44