linux/Documentation/devicetree/bindings/sound/simple-amplifier.txt
Mylène Josserand 2944d29d7c
ASoC: simple-amplifier: Make gpio property optional
Some amplifier may not have a GPIO to control the power, but instead simply
rely on the regulator to power up and down the amplifier.

In order to support those setups, let's make the GPIO optional.

Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-18 11:18:47 +00:00

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Simple Amplifier Audio Driver
Required properties:
- compatible : "dioo,dio2125" or "simple-audio-amplifier"
Optional properties:
- enable-gpios : the gpio connected to the enable pin of the simple amplifier
- VCC-supply : power supply for the device, as covered
in Documentation/devicetree/bindings/regulator/regulator.txt
Example:
amp: analog-amplifier {
compatible = "simple-audio-amplifier";
VCC-supply = <&regulator>;
enable-gpios = <&gpio GPIOH_3 0>;
};