Re: [PATCH 3/6] dt-bindings: sound: Add sound card bindings for Tesla FSD

[Rob Herring]

On Fri, Oct 14, 2022 at 03:51:48PM +0530, Padmanabhan Rajanbabu wrote:
> Add dt-binding reference document to configure the DAI link for Tesla
> FSD sound card driver.

The simple-card or graph-card bindings don't work for you?

> 
> 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

Never apply this schema. Why?

> +
> +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]

maximum: 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

All the above have types defined. You should not be redefining the 
types.

> +
> +  dai-link:
> +    description: Holds the DAI link data between CPU, Codec and Platform
> +    type: object

       additionalProperties: false

> +    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

These are common properties. Drop 'tesla'.

> +
> +      cpu:
> +        description: Holds the CPU DAI node and instance
> +        type: object

           additionalProperties: false

> +        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

           additionalProperties: false

> +        properties:
> +          sound-dai:
> +            description: Specifies the phandle of Codec DAI node
> +            $ref: /schemas/types.yaml#/definitions/phandle-array

Already has a type. Need to define how many entries (maxItems: 1 ?).

> +
> +        required:
> +          - sound-dai
> +
> +    required:
> +      - link-name
> +      - dai-format
> +      - tesla,bitclock-master
> +      - tesla,frame-master
> +      - cpu
> +
> +dependencies:
> +  dai-tdm-slot-width: [ 'dai-tdm-slot-num' ]

This should be captured with tdm-slot.txt converted to schema.

> +
> +required:
> +  - compatible
> +  - model
> +  - dai-link
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    sound {
> +        compatible = "tesla,fsd-sndcard";
> +        status = "disabled";

Why have a disabled example? Other than your example won't pass your 
schema.

> +        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
> 
>