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From:   Stephen Boyd <swboyd@chromium.org>
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Date:   Wed, 15 Sep 2021 12:26:55 -0700
Message-ID: <CAE-0n50wVDvL+f19abt9o9d0GvuAD+AanCwHozoyGfEFWKWz_g@mail.gmail.com>
Subject: Re: [PATCH v2 1/2] ASoC: google: dt-bindings: Add sc7280-herobrine
 machine bindings
To:     Srinivasa Rao Mandadapu <srivasam@codeaurora.org>,
        agross@kernel.org, alsa-devel@alsa-project.org,
        bgoswami@codeaurora.org, bjorn.andersson@linaro.org,
        broonie@kernel.org, devicetree@vger.kernel.org,
        judyhsiao@chromium.org, lgirdwood@gmail.com,
        linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
        perex@perex.cz, plai@codeaurora.org, robh+dt@kernel.org,
        rohitkr@codeaurora.org, srinivas.kandagatla@linaro.org,
        tiwai@suse.com
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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.