linux-kernel - Re: [PATCH v4 1/2] ASoC: google: dt-bindings: Add sc7280-herobrine machine bindings

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Date:   Mon, 8 Nov 2021 08:00:31 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        "Gross, Andy" <agross@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
        judyhsiao@...omium.org, Liam Girdwood <lgirdwood@...il.com>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Patrick Lai <plai@...eaurora.org>,
        Rohit kumar <rohitkr@...eaurora.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Takashi Iwai <tiwai@...e.com>
Subject: Re: [PATCH v4 1/2] ASoC: google: dt-bindings: Add sc7280-herobrine
 machine bindings

On Mon, Nov 8, 2021 at 1:35 AM Srinivasa Rao Mandadapu
<srivasam@...eaurora.org> wrote:
>
>
> On 11/6/2021 7:00 AM, Rob Herring wrote:
> Thanks for Your time Rob!!!
> > On Tue, Nov 2, 2021 at 5:57 AM Srinivasa Rao Mandadapu
> > <srivasam@...eaurora.org> wrote:
> >>
> >> On 10/30/2021 12:37 AM, Stephen Boyd wrote:
> >> Thanks for Your time Stephen!!!
> >>> Quoting Srinivasa Rao Mandadapu (2021-10-29 08:04:35)
> >>>> diff --git a/Documentation/devicetree/bindings/sound/google,sc7280-herobrine.yaml b/Documentation/devicetree/bindings/sound/google,sc7280-herobrine.yaml
> >>>> new file mode 100644
> >>>> index 0000000..3a781c8
> >>>> --- /dev/null
> >>>> +++ b/Documentation/devicetree/bindings/sound/google,sc7280-herobrine.yaml
> >>>> @@ -0,0 +1,170 @@
> >>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >>>> +%YAML 1.2
> >>>> +---
> >>>> +$id: http://devicetree.org/schemas/sound/google,sc7280-herobrine.yaml#
> >>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >>>> +
> >>>> +title: Google SC7280-Herobrine ASoC sound card driver
> >>>> +
> >>>> +maintainers:
> >>>> +  - Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
> >>>> +  - Judy Hsiao <judyhsiao@...omium.org>
> >>>> +
> >>>> +description:
> >>>> +  This binding describes the SC7280 sound card which uses LPASS for audio.
> >>>> +
> >>>> +properties:
> >>>> +  compatible:
> >>>> +    enum:
> >>>> +      - google,sc7280-herobrine
> >>>> +
> >>>> +  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:
> >>>> +    $ref: /schemas/types.yaml#/definitions/string
> >>>> +    description: User specified audio sound card name
> >>>> +
> >>>> +  "#address-cells":
> >>>> +    const: 1
> >>>> +
> >>>> +  "#size-cells":
> >>>> +    const: 0
> >>>> +
> >>>> +patternProperties:
> >>>> +  "^dai-link@[0-9a-f]$":
> >>>> +    description:
> >>>> +      Each subnode represents a dai link. Subnodes of each dai links would be
> >>>> +      cpu/codec dais.
> >>>> +
> >>>> +    type: object
> >>>> +
> >>>> +    properties:
> >>>> +      link-name:
> >>>> +        description: Indicates dai-link name and PCM stream name.
> >>>> +        $ref: /schemas/types.yaml#/definitions/string
> >>>> +        maxItems: 1
> >>>> +
> >>>> +      reg:
> >>>> +        maxItems: 1
> >>>> +        description: dai link address.
> >>>> +
> >>>> +      cpu:
> >>>> +        description: Holds subnode which indicates cpu dai.
> >>>> +        type: object
> >>>> +        properties:
> >>>> +          sound-dai: true
> >>> Is sound-dai required? And additionalProperties is false? I think we
> >>> need that yet again.
> >> Okay. Will mark additionalPropertiesas true.
> > 'additiionalProperties: true' is almost never right. It's generally
> > only correct for schemas that are incomplete collections of
> > properties.
> >
> > Rob
>
> As per Stephen Suggestion. thought it's a solution.
>
> The sound-dai required here, and same is fallowed in SC7180 machine
> driver bindings.
>
> Could You please suggest better approach on this?

Exactly what Stephen said, add:

required:
  - sound-dai

additionalProperties: false