[PATCH v9 1/8] ASoC: dt-bindings: sun50i-codec-analog: Add headphone amp regulator supply

[Chen-Yu Tsai <wens@xxxxxxxx>]

On the Allwinner A64 SoC, the audio codec has a built-in headphone
amplifier. This amplifier has a power supply separate from the rest of
the analog audio circuitry.

Add a regulator supply property to handle this.

Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
---
 Documentation/devicetree/bindings/sound/sun50i-codec-analog.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/sun50i-codec-analog.txt b/Documentation/devicetree/bindings/sound/sun50i-codec-analog.txt
index 4f8ad0e04d20..056a098495cc 100644
--- a/Documentation/devicetree/bindings/sound/sun50i-codec-analog.txt
+++ b/Documentation/devicetree/bindings/sound/sun50i-codec-analog.txt
@@ -4,9 +4,11 @@ Required properties:
 - compatible: must be one of the following compatibles:
 		- "allwinner,sun50i-a64-codec-analog"
 - reg: must contain the registers location and length
+- cpvdd-supply: Regulator supply for the headphone amplifier
 
 Example:
 	codec_analog: codec-analog@1f015c0 {
 		compatible = "allwinner,sun50i-a64-codec-analog";
 		reg = <0x01f015c0 0x4>;
+		cpvdd-supply = <&reg_eldo1>;
 	};
-- 
2.19.1

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