Add devicetree bindings documentation file for sc7180 sound card.
Signed-off-by: Cheng-Yi Chiang cychiang@chromium.org --- .../bindings/sound/qcom,sc7180.yaml | 123 ++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/qcom,sc7180.yaml
diff --git a/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml b/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml new file mode 100644 index 000000000000..d60d2880d991 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/qcom,sc7180.yaml @@ -0,0 +1,123 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/qcom,sc7180.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies Inc. SC7180 ASoC sound card driver + +maintainers: + - Rohit kumar rohitkr@codeaurora.org + - Cheng-Yi Chiang cychiang@chromium.org + +description: | + This binding describes the SC7180 sound card, which uses LPASS for audio. + +definitions: + + link-name: + description: Indicates dai-link name and PCM stream name. + $ref: /schemas/types.yaml#/definitions/string + maxItems: 1 + + dai: + type: object + properties: + sound-dai: + maxItems: 1 + $ref: /schemas/types.yaml#/definitions/phandle-array + description: phandle array of the codec or CPU DAI + + required: + - sound-dai + + unidirectional: + description: Specify direction of unidirectional dai link. + 0 for playback only. 1 for capture only. + $ref: /schemas/types.yaml#/definitions/uint32 + +properties: + compatible: + contains: + enum: + - qcom,sc7180-sndcard + + audio-routing: + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + description: |- + A list of the connections between audio components. Each entry is a + pair of strings, the first being the connection's sink, the second + being the connection's source. + + model: + $ref: /schemas/types.yaml#/definitions/string + description: User specified audio sound card name + +patternProperties: + "^dai-link-[0-9]+$": + description: | + Each subnode represents a dai link. Subnodes of each dai links would be + cpu/codec dais. + + type: object + + properties: + link-name: + $ref: "#/definitions/link-name" + + unidirectional: + $ref: "#/definitions/unidirectional" + + cpu: + $ref: "#/definitions/dai" + + codec: + $ref: "#/definitions/dai" + + required: + - link-name + - cpu + - codec + + additionalProperties: false + +examples: + + - | + snd { + compatible = "qcom,sc7180-sndcard"; + model = "sc7180-snd-card"; + + pinctrl-names = "default"; + pinctrl-0 = <&sec_mi2s_active &sec_mi2s_dout_active + &sec_mi2s_ws_active &pri_mi2s_active + &pri_mi2s_dout_active &pri_mi2s_ws_active + &pri_mi2s_din_active &pri_mi2s_mclk_active>; + + audio-routing = + "Headphone Jack", "HPOL", + "Headphone Jack", "HPOR"; + + dai-link-0 { + link-name = "MultiMedia0"; + cpu { + sound-dai = <&lpass_cpu 0>; + }; + + codec { + sound-dai = <&alc5682 0>; + }; + }; + + dai-link-1 { + link-name = "MultiMedia1"; + unidirectional = <0>; + cpu { + sound-dai = <&lpass_cpu 1>; + }; + + codec { + sound-dai = <&max98357a>; + }; + }; + };