linux-kernel - Re: [PATCH 2/3] dt-bindings: regulator: Add document bindings for max77826

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Date:   Fri, 24 Apr 2020 09:28:12 -0500
From:   Rob Herring <robh@...nel.org>
To:     Iskren Chernev <iskren.chernev@...il.com>
Cc:     linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        devicetree@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH 2/3] dt-bindings: regulator: Add document bindings for max77826

On Thu, Apr 23, 2020 at 7:59 AM Iskren Chernev <iskren.chernev@...il.com> wrote:
>
>
> On 4/20/20 11:55 PM, Rob Herring wrote:
> > On Mon, Apr 13, 2020 at 07:44:39PM +0300, Iskren Chernev wrote:
> >> +    patternProperties:
> >> +      "^LDO([1-9]|1[0-5])$":
> >> +        type: object
> >> +        allOf:
> >> +          - $ref: regulator.yaml#
> >> +
> >> +      "^BUCK|BUCKBOOST$":
> >> +        type: object
> >> +        allOf:
> >> +          - $ref: regulator.yaml#
> >> +
> >> +      additionalProperties: false
> >
> > You are defining a property called 'additionalProperties'. This one
> > should be dropped because additionalProperties doesn't work with a $ref.
> >
>
> I got the idea from mps,mpq7920.yaml. It has additionalProperties in the
> exact same places that I do. Also bd718(28|37|47).yaml seem to use
> additionalProperties inside patternProperties. Shall I modify it as well?

Indeed. mps,mp5416.yaml too. I'll fix all of these and few
non-regulator ones so I can get them into rc3.

> I couldn't find the core schema for this yaml:
> http://devicetree.org/meta-schemas/core.yaml (gives 404).  Is there a way
> to verify the validity of the yaml?

Running 'make dt_binding_check'. The url is just convention and while
files could be there they aren't. They are all contained in the
dtschema module[1].

However, in this case the meta-schema fails to check for this. It is
technically valid as it is saying you can't have a DT property called
'additionalProperties'. I've written a check now which should disallow
listing any DT property names which are json-schema vocabulary. Once
the failures get fixed I'll add it to the meta-schema.

> Also, this patch is already merged in linux-next. I guess I shall submit
> a new patch with the fixes standalone?

Yes, should be on top of this one.

Thanks,
Rob

[1] https://github.com/devicetree-org/dt-schema