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Date:   Tue, 8 Oct 2019 14:50:38 +0200
From:   Krzysztof Kozlowski <krzk@kernel.org>
To:     Rob Herring <robh+dt@kernel.org>
Cc:     Kukjin Kim <kgene@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Lee Jones <lee.jones@linaro.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Maciej Falkowski <m.falkowski@samsung.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
        devicetree@vger.kernel.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        "open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>
Subject: Re: [PATCH 1/3] dt-bindings: arm: samsung: Force clkoutN names to be
 unique in PMU
Message-ID: <20191008125038.GA2550@pi3>
References: <20191004151414.8458-1-krzk@kernel.org>
 <CAL_JsqJDTcHu5oXG6zszGHCBhTE6EW94AANUjyMV78SkKcn5yA@mail.gmail.com>
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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@kernel.org> wrote:
> >
> > The clkoutN names of clocks must be unique because they represent
> > unique inputs of clock multiplexer.
> >
> > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
> > ---
> >  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']

Best regards,
Krzysztof