Add soundcard bindings for the MT8365 SoC with the MT6357 audio codec. Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx> --- .../bindings/sound/mediatek,mt8365-mt6357.yaml | 127 +++++++++++++++++++++ 1 file changed, 127 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml new file mode 100644 index 000000000000..f469611ec6b6 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/mediatek,mt8365-mt6357.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT8365 sound card with MT6357 sound codec. + +maintainers: + - Alexandre Mergnat <amergnat@xxxxxxxxxxxx> + +description: + This binding describes the MT8365 sound card. + +properties: + compatible: + const: mediatek,mt8365-mt6357 + + mediatek,hp-pull-down: + description: + Earphone driver positive output stage short to the + audio reference ground. + Default value is false. + type: boolean + + mediatek,micbias0-microvolt: + description: | + Selects MIC Bias 0 output voltage. + [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v] + enum: [0, 1, 2, 3, 4, 5, 6, 7] + + mediatek,micbias1-microvolt: + description: | + Selects MIC Bias 1 output voltage. + [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v] + enum: [0, 1, 2, 3, 4, 5, 6, 7] + + mediatek,platform: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle of MT8365 ASoC platform. + + pinctrl-names: + minItems: 1 + items: + - const: aud_default + - const: aud_dmic + - const: aud_miso_off + - const: aud_miso_on + - const: aud_mosi_off + - const: aud_mosi_on + + vaud28-supply: + description: + 2.8 volt supply for the audio codec + +patternProperties: + "^dai-link-[0-9]+$": + type: object + description: + Container for dai-link level properties and CODEC sub-nodes. + + properties: + codec: + type: object + description: Holds subnode which indicates codec dai. + + properties: + sound-dai: + maxItems: 1 + description: phandle of the codec DAI + + additionalProperties: false + + link-name: + description: + This property corresponds to the name of the BE dai-link to which + we are going to update parameters in this node. + items: + const: 2ND I2S BE + + sound-dai: + maxItems: 1 + description: phandle of the CPU DAI + + additionalProperties: false + + required: + - link-name + - sound-dai + +additionalProperties: false + +required: + - compatible + - mediatek,platform + - pinctrl-names + - vaud28-supply + +examples: + - | + sound { + compatible = "mediatek,mt8365-mt6357"; + mediatek,platform = <&afe>; + pinctrl-names = "aud_default", + "aud_dmic", + "aud_miso_off", + "aud_miso_on", + "aud_mosi_off", + "aud_mosi_on"; + pinctrl-0 = <&aud_default_pins>; + pinctrl-1 = <&aud_dmic_pins>; + pinctrl-2 = <&aud_miso_off_pins>; + pinctrl-3 = <&aud_miso_on_pins>; + pinctrl-4 = <&aud_mosi_off_pins>; + pinctrl-5 = <&aud_mosi_on_pins>; + vaud28-supply = <&mt6357_vaud28_reg>; + + /* hdmi interface */ + dai-link-0 { + sound-dai = <&afe>; + link-name = "2ND I2S BE"; + + codec { + sound-dai = <&it66121hdmitx>; + }; + }; + }; -- 2.25.1
