linux-kernel - Re: [PATCH 1/2] dt-bindings: display/msm: qcom,sdm845-mdss: add memory-region property

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Message-ID: <CAMi1Hd14Y4bByO9abr-nFppS2m5CiSyLVQ9ev7+bx55rRL5GjA@mail.gmail.com>
Date:   Thu, 13 Jul 2023 22:18:02 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        Bryan Donoghue <bryan.odonoghue@...aro.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Krishna Manikandan <quic_mkrishn@...cinc.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dt <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt-bindings: display/msm: qcom,sdm845-mdss: add
 memory-region property

On Thu, 13 Jul 2023 at 21:13, Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> On Thu, 13 Jul 2023 at 18:34, Amit Pundir <amit.pundir@...aro.org> wrote:
> >
> > On Wed, 12 Jul 2023 at 18:45, Dmitry Baryshkov
> > <dmitry.baryshkov@...aro.org> wrote:
> > >
> > > On 12/07/2023 16:02, Amit Pundir wrote:
> > > > Add and document the reserved memory region property
> > > > in the qcom,sdm845-mdss schema.
> > > >
> > > > Signed-off-by: Amit Pundir <amit.pundir@...aro.org>
> > > > ---
> > > >   .../devicetree/bindings/display/msm/qcom,sdm845-mdss.yaml    | 5 +++++
> > > >   1 file changed, 5 insertions(+)
> > > >
> > > > diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sdm845-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sdm845-mdss.yaml
> > > > index 6ecb00920d7f..3ea1dbd7e317 100644
> > > > --- a/Documentation/devicetree/bindings/display/msm/qcom,sdm845-mdss.yaml
> > > > +++ b/Documentation/devicetree/bindings/display/msm/qcom,sdm845-mdss.yaml
> > > > @@ -39,6 +39,11 @@ properties:
> > > >     interconnect-names:
> > > >       maxItems: 2
> > > >
> > > > +  memory-region:
> > > > +    maxItems: 1
> > > > +    description:
> > > > +      Phandle to a node describing a reserved memory region.
> > > > +
> > >
> > > Please add it to mdss-common.yaml instead
> >
> > mdss-common.yaml didn't like this property at all and
> > I ran into a lot of new dtbs_check warnings:
> > https://www.irccloud.com/pastebin/raw/pEYAeaB1
> >
> > I need some help in decoding these please.
>
> I'm not sure what happened there (and it's hard to understand without
> seeing your patch).

Yup.. It was my broken patch. I used "For example:" in the property
description and it tripped off the checks. Didn't realise that
casually used ":" can break yaml parsing until now. Sorry for all the
noise.

Regards,
Amit Pundir

> But after applying your patch to mdss-common.yaml,
> `make dt_binding_check' passes:
>
> diff --git a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
> b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
> index ccd7d6417523..924fe383e4a1 100644
> --- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml
> @@ -77,6 +77,11 @@ properties:
>      items:
>        - description: MDSS_CORE reset
>
> +  memory-region:
> +    maxItems: 1
> +    description:
> +      Phandle to a node describing a reserved memory region.
> +
>  required:
>    - reg
>    - reg-names
>
>
> >
> > Regards,
> > Amit Pundir
> >
> > >
> > > >   patternProperties:
> > > >     "^display-controller@[0-9a-f]+$":
> > > >       type: object
> > >
> > > --
> > > With best wishes
> > > Dmitry
> > >
>
>
>
> --
> With best wishes
> Dmitry