Re: [PATCH 1/3] dt-bindings: arm: samsung: Force clkoutN names to be unique in PMU

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On Tue, Oct 08, 2019 at 09:17:16AM -0500, Rob Herring wrote:
> On Tue, Oct 8, 2019 at 9:05 AM Rob Herring <robh+dt@xxxxxxxxxx> wrote:
> >
> > On Tue, Oct 8, 2019 at 7:50 AM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> > >
> > > On Tue, Oct 08, 2019 at 07:38:14AM -0500, Rob Herring wrote:
> > > > On Fri, Oct 4, 2019 at 10:14 AM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
> > > > >
> > > > > The clkoutN names of clocks must be unique because they represent
> > > > > unique inputs of clock multiplexer.
> > > > >
> > > > > Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> > > > > ---
> > > > >  Documentation/devicetree/bindings/arm/samsung/pmu.yaml | 6 ++++--
> > > > >  1 file changed, 4 insertions(+), 2 deletions(-)
> > > > >
> > > > > diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.yaml b/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
> > > > > index 73b56fc5bf58..d8e03716f5d2 100644
> > > > > --- a/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
> > > > > +++ b/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
> > > > > @@ -53,8 +53,10 @@ properties:
> > > > >        List of clock names for particular CLKOUT mux inputs
> > > > >      minItems: 1
> > > > >      maxItems: 32
> > > > > -    items:
> > > > > -      pattern: '^clkout([0-9]|[12][0-9]|3[0-1])$'
> > > > > +    allOf:
> > > > > +      - items:
> > > > > +          pattern: '^clkout([0-9]|[12][0-9]|3[0-1])$'
> > > > > +      - uniqueItems: true
> > > >
> > > > You shouldn't need the 'allOf', just add uniqueItems at the same level as items.
> > >
> > > If you mean something like:
> > >   56     uniqueItems: true
> > >   57     items:
> > >   58       pattern: '^clkout([0-9]|[12][0-9]|3[0-1])$'
> > >
> > > Then the dt_binding_check fails:
> > >
> > > dev/linux/Documentation/devicetree/bindings/arm/samsung/pmu.yaml: properties:clock-names:
> > > 'uniqueItems' is not one of ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'deprecated', 'description', 'else', 'enum', 'items', 'if', 'minItems', 'minimum', 'maxItems', 'maximum', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'required', 'then', 'type', 'typeSize', 'unevaluatedProperties']
> >
> > I can add it.
> >
> > The other option is to fix this in the clock schema. I'm not sure if
> > there's a need for duplicate clock-names. Seems unlikely. I'll test
> > that.
> 
> Actually, clock-names is already set to be unique. Did you see otherwise?

Yeah, I duplicated on purpose "clkout1" and it was not reported as an
error. That's why I added "uniqueItems".

Best regards,
Krzysztof

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