netdev - Re: [PATCH net-next 1/7] dt-bindings: net: sff,sfp: update binding

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Date:   Thu, 20 Oct 2022 09:19:23 -0500
From:   Rob Herring <robh@...nel.org>
To:     "Russell King (Oracle)" <linux@...linux.org.uk>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next 1/7] dt-bindings: net: sff,sfp: update binding

On Thu, Oct 20, 2022 at 09:28:25AM +0100, Russell King (Oracle) wrote:
> On Wed, Oct 19, 2022 at 06:31:53PM -0500, Rob Herring wrote:
> > On Wed, 19 Oct 2022 14:28:46 +0100, Russell King (Oracle) wrote:
> > > Add a minimum and default for the maximum-power-milliwatt option;
> > > module power levels were originally up to 1W, so this is the default
> > > and the minimum power level we can have for a functional SFP cage.
> > > 
> > > Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> > > ---
> > >  Documentation/devicetree/bindings/net/sff,sfp.yaml | 2 ++
> > >  1 file changed, 2 insertions(+)
> > > 
> > 
> > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> > on your patch (DT_CHECKER_FLAGS is new in v5.13):
> > 
> > yamllint warnings/errors:
> > 
> > dtschema/dtc warnings/errors:
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/sff,sfp.yaml: properties:maximum-power-milliwatt: 'minimum' should not be valid under {'enum': ['const', 'enum', 'exclusiveMaximum', 'exclusiveMinimum', 'minimum', 'maximum', 'multipleOf', 'pattern']}
> > 	hint: Scalar and array keywords cannot be mixed
> > 	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
> 
> I'm reading that error message and it means absolutely nothing to me.
> Please can you explain it (and also re-word it to be clearer)?

'maxItems' is a constraint for arrays. 'maximum' is a constraint for 
scalar values. Mixing them does not make sense.

I have little control over the 1st line as that comes from jsonschema 
package. 'hint' is what I've added to explain things a bit more.

Rob