Add the audio codec sub-device. This sub-device is used to set required
and optional voltage needed according to the hardware.
The properties are:
- phandle of the required power supply.
- Setup of microphone bias voltage.
- Setup of the speaker pin pull-down.
Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
---
.../devicetree/bindings/mfd/mediatek,mt6357.yaml | 34 ++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
index 37423c2e0fdf..30234f13a810 100644
--- a/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6357.yaml
@@ -37,6 +37,34 @@ properties:
"#interrupt-cells":
const: 2
+ audio-codec:
+ type: object
+ properties:
+ vaud28-supply:
+ description: 2.8 volt supply phandle for the audio codec
+
+ mediatek,hp-pull-down:
+ description:
+ Earphone driver positive output stage short to
+ the audio reference ground.
+ type: boolean
+
+ mediatek,micbias0-microvolt:
+ description: Selects MIC Bias 0 output voltage.
+ enum: [1700000, 1800000, 1900000, 2000000,
+ 2100000, 2500000, 2600000, 2700000]
+ default: 1700000
+
+ mediatek,micbias1-microvolt:
+ description: Selects MIC Bias 1 output voltage.
+ enum: [1700000, 1800000, 1900000, 2000000,
+ 2100000, 2500000, 2600000, 2700000]
+ default: 1700000
+
+ required:
+ - vaud28-supply
+ unevaluatedProperties: false
+
regulators:
type: object
$ref: /schemas/regulator/mediatek,mt6357-regulator.yaml
@@ -83,6 +111,12 @@ examples:
interrupt-controller;
#interrupt-cells = <2>;
+ audio-codec {
+ mediatek,micbias0-microvolt = <1700000>;
+ mediatek,micbias1-microvolt = <1700000>;
+ vaud28-supply = <&mt6357_vaud28_reg>;
+ };
+
regulators {
mt6357_vproc_reg: buck-vproc {
regulator-name = "vproc";
--
2.25.1
