linux-kernel - Re: [PATCH v4 1/4] dt-bindings: arm-smmu: Document smmu-500 binding for SM6125

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Message-ID: <20221222101012.ptrrugxj3ksiyitn@SoMainline.org>
Date:   Thu, 22 Dec 2022 11:10:12 +0100
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     phone-devel@...r.kernel.org, Will Deacon <will@...nel.org>,
        Joerg Roedel <joro@...tes.org>,
        Bjorn Andersson <andersson@...nel.org>,
        ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        Lux Aliaga <they@...t.lgbt>,
        Robin Murphy <robin.murphy@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Thierry Reding <treding@...dia.com>,
        Melody Olvera <quic_molvera@...cinc.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v4 1/4] dt-bindings: arm-smmu: Document smmu-500 binding
 for SM6125

On 2022-12-22 10:29:40, Krzysztof Kozlowski wrote:
> On 22/12/2022 09:23, Marijn Suijten wrote:
> > On 2022-12-20 10:52:49, Krzysztof Kozlowski wrote:
> >> On 19/12/2022 20:28, Marijn Suijten wrote:
> >>> On 2022-12-19 10:09:03, Krzysztof Kozlowski wrote:
> >>>> On 19/12/2022 10:07, Krzysztof Kozlowski wrote:
> >>>>> On 16/12/2022 22:58, Marijn Suijten wrote:
> >>>>>> From: Martin Botka <martin.botka@...ainline.org>
> >>>>>>
> >>>>>> Document smmu-500 compatibility with the SM6125 SoC.
> >>>>>>
> >>>>>
> >>>>> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >>>>
> >>>> Wait, not entirely... no constraints for clocks and regs?
> >>>
> >>> Quite odd that there is no warning for my DT patch as it clearly
> >>> requires at least one clock...
> > 
> > Again, any idea why there's no warning for this DT mismatching minItems:
> > 1 for clocks, clock-names and power-domains?
> 
> I don't know what do you have in DT and what is mismatched. Why there
> should be a warning?

There is:

  clock-names:
    minItems: 1
    maxItems: 7

  clocks:
    minItems: 1
    maxItems: 7

But I did not provide _any_ (see patch 2 of this series).  Shouldn't
that trigger a warning?

> >>> Irrespective of that downstream doesn't define any (nor power domains).
> >>> How should we proceed?
> >>
> >> Binding now has constraints for clocks so at least that should be added
> >> to your variant.
> > 
> > And that should be:
> > 
> >     clock-names: false
> >     clocks: false
> >     power-domains: false
> > 
> > Because this board does declare have any, at least not when going off of
> > downstream DT?
> 
> I'll add it for existing platforms, so you can rebase on top.

Thanks, will do!

- Marijn