Add MT8365 audio codec bindings to set required and optional voltage properties between the codec and the board. The properties are: - phandle of the requiered power supply. - Setup of microphone bias voltage. - Setup of the speaker pin pull-down. Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx> --- .../devicetree/bindings/sound/mt6357.yaml | 54 ++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/mt6357.yaml b/Documentation/devicetree/bindings/sound/mt6357.yaml new file mode 100644 index 000000000000..381cb71b959f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/mt6357.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/mt6357.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6357 Codec + +maintainers: + - Alexandre Mergnat <amergnat@xxxxxxxxxxxx> + +description: | + This is the required and optional voltage properties for this subdevice. + The communication between MT6357 and SoC is through Mediatek PMIC wrapper. + For more detail, please visit Mediatek PMIC wrapper documentation. + Must be a child node of PMIC wrapper. + +properties: + + 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 + + mediatek,vaud28-supply: + description: 2.8 volt supply phandle for the audio codec + +required: + - mediatek,vaud28-supply + +additionalProperties: false + +examples: + - | + codec { + mediatek,micbias0-microvolt = <1900000>; + mediatek,micbias1-microvolt = <1700000>; + mediatek,vaud28-supply = <&mt6357_vaud28_reg>; + }; + +... -- 2.25.1
