linux-kernel - Re: [PATCH v2 1/2] ASoC: google: dt-bindings: Add sc7280-herobrine machine bindings

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Date:   Wed, 15 Sep 2021 12:26:55 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        agross@...nel.org, alsa-devel@...a-project.org,
        bgoswami@...eaurora.org, bjorn.andersson@...aro.org,
        broonie@...nel.org, devicetree@...r.kernel.org,
        judyhsiao@...omium.org, lgirdwood@...il.com,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        perex@...ex.cz, plai@...eaurora.org, robh+dt@...nel.org,
        rohitkr@...eaurora.org, srinivas.kandagatla@...aro.org,
        tiwai@...e.com
Subject: Re: [PATCH v2 1/2] ASoC: google: dt-bindings: Add sc7280-herobrine
 machine bindings

Quoting Srinivasa Rao Mandadapu (2021-09-15 04:15:43)
>
> On 9/14/2021 1:21 AM, Stephen Boyd wrote:
> > Quoting Srinivasa Rao Mandadapu (2021-09-13 06:17:41)
> >> 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..e0d705f
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/sound/google,sc7280-herobrine.yaml
> >> +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
> > Shouldn't sound-dai be required?
> Sorry. I didn't get your Query. You mean in below "required:" properties
> need to add sound-dai also?

I'd expect there to be a required: list for the 'cpu' and 'codec'
objects that says sound-dai, unless that is implicit somehow. I'm
definitely not an expert in the DT yaml, but I suspect two more
'required:' sections are needed so that 'sound-dai' isn't an optional
property.