Re: [PATCH v3 1/5] dt-bindings: display: msm: dp-controller: document SM8450 compatible

[Dmitry Baryshkov]

Hi,

On Sat, 11 Feb 2023 at 13:38, Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> On 10/02/2023 16:27, Neil Armstrong wrote:
> > On 10/02/2023 16:16, Dmitry Baryshkov wrote:
> >> On 10/02/2023 16:44, Neil Armstrong wrote:
> >>> The SM8450 & SM350 shares the same DT TX IP version, use the
> >>> SM8350 compatible as fallback for SM8450.
> >>>
> >>> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> >>> Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> >>> ---
> >>>   .../bindings/display/msm/dp-controller.yaml        | 25 +++++++++++++---------
> >>>   1 file changed, 15 insertions(+), 10 deletions(-)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> >>> index 0e8d8df686dc..f0c2237d5f82 100644
> >>> --- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> >>> +++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml
> >>> @@ -15,16 +15,21 @@ description: |
> >>>   properties:
> >>>     compatible:
> >>> -    enum:
> >>> -      - qcom,sc7180-dp
> >>> -      - qcom,sc7280-dp
> >>> -      - qcom,sc7280-edp
> >>> -      - qcom,sc8180x-dp
> >>> -      - qcom,sc8180x-edp
> >>> -      - qcom,sc8280xp-dp
> >>> -      - qcom,sc8280xp-edp
> >>> -      - qcom,sdm845-dp
> >>> -      - qcom,sm8350-dp
> >>> +    oneOf:
> >>> +      - enum:
> >>> +          - qcom,sc7180-dp
> >>> +          - qcom,sc7280-dp
> >>> +          - qcom,sc7280-edp
> >>> +          - qcom,sc8180x-dp
> >>> +          - qcom,sc8180x-edp
> >>> +          - qcom,sc8280xp-dp
> >>> +          - qcom,sc8280xp-edp
> >>> +          - qcom,sdm845-dp
> >>> +          - qcom,sm8350-dp
> >>> +      - items:
> >>> +          - enum:
> >>> +              - qcom,sm8450-dp
> >>> +          - const: qcom,sm8350-dp
> >>
> >> Neil, Krzysztof, I'm not convinced that this is worth all the troubles. I think it would be easier to have a flat list of compatibles and handle all the differences inside the driver. For example, for sdm845 we simply reused sc7180 config internally, while keeping separate compatible strings.
> >
> > Sure, but the doc reports the SM8350, SM8450 and SM550 has the exact same IP version, isn't fallback for that cat ?
>
> Exactly.
>
> What's the trouble with the list Neil created?

No troubles. I felt that it fell out of the line, but no other issues.


-- 
With best wishes
Dmitry