linux-kernel - Re: [PATCH v2 1/2] dt-bindings: regulator: Add DA9121

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Date:   Thu, 5 Nov 2020 10:39:26 +0100
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     Rob Herring <robh@...nel.org>
CC:     "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        kernel <kernel@...s.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "support.opensource@...semi.com" <support.opensource@...semi.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: regulator: Add DA9121

On Wed, Nov 04, 2020 at 07:57:55PM +0100, Rob Herring wrote:
> On Tue, 03 Nov 2020 11:00:20 +0100, Vincent Whitchurch wrote:
> > Add bindings for the Dialog Semiconductor DA9121 voltage regulator.
> > 
> > Signed-off-by: Vincent Whitchurch <vincent.whitchurch@...s.com>
> > ---
> >  .../bindings/regulator/dlg,da9121.yaml        | 47 +++++++++++++++++++
> >  1 file changed, 47 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
> > 
> 
> My bot found errors running 'make dt_binding_check' on your patch:
> 
> yamllint warnings/errors:
> 
> dtschema/dtc warnings/errors:
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml: 'additionalProperties' is a required property
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/regulator/dlg,da9121.yaml: ignoring, error in schema: 
> warning: no schema found in file: ./Documentation/devicetree/bindings/regulator/dlg,da9121.yaml
> 
> See https://patchwork.ozlabs.org/patch/1392753

OK, thanks.  I'll fix it by changing the unevaluatedProperties to an
additionalProperties (since the $ref has moved).  

I think I should also move the unevaluatedProperties to the buck1 level
instead of removing it completely, because I see a bunch of other
regulator bindings doing it, but the checks don't complain about that
being missing and I can't see that making any difference for the
validation.

For example, I was hoping that this:

  buck1:
    description:
      Initial data for the Buck1 regulator.
    $ref: "regulator.yaml#"
    type: object
    unevaluatedProperties: false

would complain about something like:

        buck1 {
	  not-a-real-property;
          regulator-min-microvolt = <680000>;
          regulator-max-microvolt = <820000>;
        };

but it doesn't, so I don't quite understand what "unevaluatedProperties:
false" prevents.

> 
> The base for the patch is generally the last rc1. Any dependencies
> should be noted.
> 
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
> 
> pip3 install dtschema --upgrade

Not sure if it's just something wrong in my setup, but I had dtschema
installed from master a while ago, and the above command didn't upgrade
it for me.  I had to explicitly upgrade it with the full URL again to
get the latest version:

 pip3 install --upgrade git+https://github.com/devicetree-org/dt-schema.git@master