Add dt-binding reference document to configure the DAI link for Tesla FSD sound card driver. Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@xxxxxxxxxxx> --- .../bindings/sound/tesla,fsd-card.yaml | 158 ++++++++++++++++++ 1 file changed, 158 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml diff --git a/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml b/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml new file mode 100644 index 000000000000..4bd590f4ee27 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml @@ -0,0 +1,158 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2022 Samsung Electronics Co. Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/tesla,fsd-card.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Tesla FSD ASoC sound card driver + +maintainers: + - Padmanabhan Rajanbabu <p.rajanbabu@xxxxxxxxxxx> + +description: | + This binding describes the node properties and essential DT entries of FSD + SoC sound card node + +select: false + +properties: + compatible: + enum: + - tesla,fsd-sndcard + + model: + description: Describes the Name of the sound card + $ref: /schemas/types.yaml#/definitions/string + + widgets: + description: A list of DAPM widgets in the sound card. Each entry is a pair + of strings, the first being the widget name and the second being the + widget alias + $ref: /schemas/types.yaml#/definitions/string-array + + audio-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/string-array + + dai-tdm-slot-num: + description: Enables TDM mode and specifies the number of TDM slots to be + enabled + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3, 4, 5, 6, 7, 8] + default: 2 + + dai-tdm-slot-width: + description: Specifies the slot width of each TDm slot enabled + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [8, 16, 24] + default: 16 + + dai-link: + description: Holds the DAI link data between CPU, Codec and Platform + type: object + properties: + link-name: + description: Specifies the name of the DAI link + $ref: /schemas/types.yaml#/definitions/string + + dai-format: + description: Specifies the serial data format of CPU DAI + $ref: /schemas/types.yaml#/definitions/string + + tesla,bitclock-master: + description: Specifies the phandle of bitclock master DAI + $ref: /schemas/types.yaml#/definitions/phandle + + tesla,frame-master: + description: Specifies the phandle of frameclock master DAI + $ref: /schemas/types.yaml#/definitions/phandle + + cpu: + description: Holds the CPU DAI node and instance + type: object + properties: + sound-dai: + description: Specifies the phandle of CPU DAI node + $ref: /schemas/types.yaml#/definitions/phandle-array + + required: + - sound-dai + + codec: + description: Holds the Codec DAI node and instance + type: object + properties: + sound-dai: + description: Specifies the phandle of Codec DAI node + $ref: /schemas/types.yaml#/definitions/phandle-array + + required: + - sound-dai + + required: + - link-name + - dai-format + - tesla,bitclock-master + - tesla,frame-master + - cpu + +dependencies: + dai-tdm-slot-width: [ 'dai-tdm-slot-num' ] + +required: + - compatible + - model + - dai-link + +additionalProperties: false + +examples: + - | + sound { + compatible = "tesla,fsd-sndcard"; + status = "disabled"; + model = "fsd-i2s"; + + primary-dai-link-0 { + link-name = "fsd-primary-0"; + dai-format = "i2s"; + tesla,bitclock-master = <&tdm_0>; + tesla,frame-master = <&tdm_0>; + cpu { + sound-dai = <&tdm_0 0>; + }; + }; + + secondary-dai-link-0 { + link-name = "fsd-secondary-0"; + dai-format = "i2s"; + tesla,bitclock-master = <&tdm_0>; + tesla,frame-master = <&tdm_0>; + cpu { + sound-dai = <&tdm_0 1>; + }; + }; + + primary-dai-link-1 { + link-name = "fsd-primary-1"; + dai-format = "i2s"; + tesla,bitclock-master = <&tdm_1>; + tesla,frame-master = <&tdm_1>; + cpu { + sound-dai = <&tdm_1 0>; + }; + }; + + secondary-dai-link-1 { + link-name = "fsd-secondary-1"; + dai-format = "i2s"; + tesla,bitclock-master = <&tdm_1>; + tesla,frame-master = <&tdm_1>; + cpu { + sound-dai = <&tdm_1 1>; + }; + }; + }; -- 2.17.1
