linux-kernel - Re: [PATCH v6 1/4] dt-bindings: display: msm: Add SM6150 DisplayPort controller

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Message-ID: <2rvypo4rvvjrtnjow37vfqifbkr7gfra5n6rnrshubtk4nxt2w@uan44zq44iem>
Date: Tue, 28 Oct 2025 21:57:45 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
Cc: Rob Herring <robh@...nel.org>, Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        fange.zhang@....qualcomm.com, yongxing.mou@....qualcomm.com,
        li.liu@....qualcomm.com
Subject: Re: [PATCH v6 1/4] dt-bindings: display: msm: Add SM6150 DisplayPort
 controller

On Tue, Oct 28, 2025 at 01:06:52PM +0800, Xiangxu Yin wrote:
> 
> On 10/27/2025 11:26 PM, Rob Herring wrote:
> > On Fri, Oct 24, 2025 at 01:21:01PM +0800, Xiangxu Yin wrote:
> >> SM6150 uses the same DisplayPort controller as SM8150, which is already
> >> compatible with SM8350. Add the SM6150-specific compatible string and
> >> update the binding example accordingly.
> >>
> >> Signed-off-by: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
> >> ---
> >>  .../devicetree/bindings/display/msm/qcom,sm6150-mdss.yaml      | 10 ++++++++++
> >>  1 file changed, 10 insertions(+)
> >>
> >> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm6150-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm6150-mdss.yaml
> >> index 9ac24f99d3ada1c197c9654dc9babebccae972ed..ba0dea2edea98cee0826cf38b3f33361666e004a 100644
> >> --- a/Documentation/devicetree/bindings/display/msm/qcom,sm6150-mdss.yaml
> >> +++ b/Documentation/devicetree/bindings/display/msm/qcom,sm6150-mdss.yaml
> >> @@ -51,6 +51,16 @@ patternProperties:
> >>        compatible:
> >>          const: qcom,sm6150-dpu
> >>  
> >> +  "^displayport-controller@[0-9a-f]+$":
> >> +    type: object
> >> +    additionalProperties: true
> >> +    properties:
> >> +      compatible:
> >> +        items:
> >> +          - const: qcom,sm6150-dp
> >> +          - const: qcom,sm8150-dp
> >> +          - const: qcom,sm8350-dp
> > The actual schema will check the order. Here, just:
> >
> > compatible:
> >   contains:
> >     const: qcom,sm6150-dp
> 
> 
> My initial plan was to use only `qcom,sm6150-dp` with `contains` as suggested.
> 
> But when I tried that, CHECK_DTBS schema check failed:
> ‘displayport-controller@...0000:compatible: ['qcom,sm6150-dp', 'qcom,sm8150-dp', 'qcom,sm8350-dp'] is too long
> from schema $id: http://devicetree.org/schemas/display/msm/qcom,sm6150-mdss.yaml’‘
> 
> So, I have added all.

Please use properties: compatible: contains: 

> 
> 
> >
> >> +
> >>    "^dsi@[0-9a-f]+$":
> >>      type: object
> >>      additionalProperties: true
> >>
> >> -- 
> >> 2.34.1
> >>

-- 
With best wishes
Dmitry