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ASoC: add DT bindings documentation for ROHM BD28623 codec 

This patch adds DT bindings documentation for ROHM BD28623MUV
class D speaker amplifier.

Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Katsuhiro Suzuki 2018-02-23 10:17:16 +09:00 committed by Mark Brown
parent 7928b2cbe5
commit f5ca3ab9bc
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Documentation/devicetree/bindings/sound/rohm,bd28623.txt Normal file
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ROHM BD28623MUV Class D speaker amplifier for digital input
This codec does not have any control buses such as I2C, it detect format and
rate of I2S signal automatically. It has two signals that can be connected
to GPIOs: reset and mute.
Required properties:
- compatible : should be "rohm,bd28623"
- #sound-dai-cells: should be 0.
- VCCA-supply : regulator phandle for the VCCA supply
- VCCP1-supply : regulator phandle for the VCCP1 supply
- VCCP2-supply : regulator phandle for the VCCP2 supply
Optional properties:
- reset-gpios : GPIO specifier for the active low reset line
- mute-gpios : GPIO specifier for the active low mute line
Example:
codec {
compatible = "rohm,bd28623";
#sound-dai-cells = <0>;
VCCA-supply = <&vcc_reg>;
VCCP1-supply = <&vcc_reg>;
VCCP2-supply = <&vcc_reg>;
reset-gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
mute-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
};