This patch adds DT bindings documentation for ROHM BD28623MUV class D speaker amplifier.
Signed-off-by: Katsuhiro Suzuki suzuki.katsuhiro@socionext.com
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Changes in v2: - Change gpio properties to optional - Change VCCA, VCCP-supply to mandatory --- .../devicetree/bindings/sound/rohm,bd28623.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/rohm,bd28623.txt
diff --git a/Documentation/devicetree/bindings/sound/rohm,bd28623.txt b/Documentation/devicetree/bindings/sound/rohm,bd28623.txt new file mode 100644 index 000000000000..d84557c2686e --- /dev/null +++ b/Documentation/devicetree/bindings/sound/rohm,bd28623.txt @@ -0,0 +1,29 @@ +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>; + };