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Diffstat (limited to 'Documentation/devicetree/bindings/sound/audio-graph-card.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/sound/audio-graph-card.yaml | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml new file mode 100644 index 000000000000..2329aeb91db7 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/audio-graph-card.yaml @@ -0,0 +1,153 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/audio-graph-card.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Audio Graph Card Driver Device Tree Bindings + +maintainers: + - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + +properties: + compatible: + enum: + - audio-graph-card + - audio-graph-scu-card + + dais: + $ref: /schemas/types.yaml#/definitions/phandle-array + label: + maxItems: 1 + prefix: + description: "device name prefix" + $ref: /schemas/types.yaml#/definitions/string + routing: + 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. + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + widgets: + description: User specified audio sound widgets. + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + convert-rate: + description: CPU to Codec rate convert. + $ref: /schemas/types.yaml#/definitions/uint32 + convert-channels: + description: CPU to Codec rate channels. + $ref: /schemas/types.yaml#/definitions/uint32 + pa-gpios: + maxItems: 1 + hp-det-gpio: + maxItems: 1 + mic-det-gpio: + maxItems: 1 + + port: + description: single OF-Graph subnode + type: object + properties: + reg: + maxItems: 1 + prefix: + description: "device name prefix" + $ref: /schemas/types.yaml#/definitions/string + convert-rate: + description: CPU to Codec rate convert. + $ref: /schemas/types.yaml#/definitions/uint32 + convert-channels: + description: CPU to Codec rate channels. + $ref: /schemas/types.yaml#/definitions/uint32 + patternProperties: + "^endpoint(@[0-9a-f]+)?": + type: object + properties: + remote-endpoint: + maxItems: 1 + mclk-fs: + description: | + Multiplication factor between stream rate and codec mclk. + When defined, mclk-fs property defined in dai-link sub nodes are ignored. + $ref: /schemas/types.yaml#/definitions/uint32 + frame-inversion: + description: dai-link uses frame clock inversion + $ref: /schemas/types.yaml#/definitions/flag + bitclock-inversion: + description: dai-link uses bit clock inversion + $ref: /schemas/types.yaml#/definitions/flag + frame-master: + description: Indicates dai-link frame master. + $ref: /schemas/types.yaml#/definitions/phandle-array + maxItems: 1 + bitclock-master: + description: Indicates dai-link bit clock master + $ref: /schemas/types.yaml#/definitions/phandle-array + maxItems: 1 + dai-format: + description: audio format. + items: + enum: + - i2s + - right_j + - left_j + - dsp_a + - dsp_b + - ac97 + - pdm + - msb + - lsb + convert-rate: + description: CPU to Codec rate convert. + $ref: /schemas/types.yaml#/definitions/uint32 + convert-channels: + description: CPU to Codec rate channels. + $ref: /schemas/types.yaml#/definitions/uint32 + required: + - remote-endpoint + + ports: + description: multi OF-Graph subnode + type: object + patternProperties: + "^port(@[0-9a-f]+)?": + $ref: "#/properties/port" + +required: + - compatible + - dais + +additionalProperties: false + +examples: + - | + sound { + compatible = "audio-graph-card"; + + dais = <&cpu_port_a>; + }; + + cpu { + /* + * dai-controller own settings + */ + + port { + cpu_endpoint: endpoint { + remote-endpoint = <&codec_endpoint>; + dai-format = "left_j"; + }; + }; + }; + + codec { + /* + * codec own settings + */ + + port { + codec_endpoint: endpoint { + remote-endpoint = <&cpu_endpoint>; + }; + }; + }; |