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ASoC: adau1977: Add MICBIAS example in DT bindings

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Add MICBIAS property to the optional devicetree bindings.

Signed-off-by: Bogdan Togorean <bogdan.togorean@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Bogdan Togorean 2019-02-19 16:11:38 +02:00 committed by Mark Brown
parent a6d9cef30e
commit fb7a97456e
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1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/sound/adi,adau1977.txt
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@ -23,6 +23,12 @@ Optional properties:
- DVDD-supply: supply voltage for the digital core, please consult
Documentation/devicetree/bindings/regulator/regulator.txt
- adi,micbias: configures the voltage setting for the MICBIAS pin.
Select 0/1/2/3/4/5/6/7/8 to specify MICBIAS voltage
5V/5.5V/6V/6.5V/7V/7.5V/8V/8.5V/9V
If not specified the default value will be "7" meaning 8.5 Volts.
This property is only valid for the ADAU1977
For required properties on SPI, please consult
Documentation/devicetree/bindings/spi/spi-bus.txt
@ -40,6 +46,7 @@ Examples:
AVDD-supply = <&regulator>;
DVDD-supply = <&regulator_digital>;
adi,micbias = <3>;
reset_gpio = <&gpio 10 GPIO_ACTIVE_LOW>;
};