Re: [PATCH v2 1/4] dt-bindings: display/msm: add core clock to the mdss bindings

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On 09/01/2023 11:51, Dmitry Baryshkov wrote:
> On 09/01/2023 12:35, Krzysztof Kozlowski wrote:
>> On 09/01/2023 01:52, Dmitry Baryshkov wrote:
>>> Add (optional) core clock to the mdss bindings to let the MDSS driver
>>> access harware registers before MDP driver probes.
>>>
>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
>>> ---
>>>   .../bindings/display/msm/qcom,mdss.yaml       | 34 ++++++++++++++-----
>>>   1 file changed, 26 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>>> index ba0460268731..0647fc5a7d94 100644
>>> --- a/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>>> +++ b/Documentation/devicetree/bindings/display/msm/qcom,mdss.yaml
>>> @@ -45,17 +45,11 @@ properties:
>>>   
>>>     clocks:
>>>       minItems: 1
>>> -    items:
>>> -      - description: Display abh clock
>>> -      - description: Display axi clock
>>
>> Not related to this patch, but it is a bit surprising to see AXI clock
>> optional.
> 
> Hmm, There is one defined downstream. Probably we should fix that (but 
> yes, it's a separate issue).
> 
>>> -      - description: Display vsync clock
>>> +    maxItems: 4
>>>   
>>>     clock-names:
>>>       minItems: 1
>>> -    items:
>>> -      - const: iface
>>> -      - const: bus
>>> -      - const: vsync
>>> +    maxItems: 4
>>>   
>>>     "#address-cells":
>>>       const: 1
>>> @@ -69,6 +63,30 @@ properties:
>>>       items:
>>>         - description: MDSS_CORE reset
>>>   
>>> +oneOf:
>>> +  - properties:
>>> +      clocks:
>>> +        minItems: 3
>>> +        maxItems: 4
>>> +
>>> +      clock-names:
>>> +        minItems: 3
>>> +        items:
>>> +          - const: iface
>>> +          - const: bus
>>
>> BTW, sc7180-mdss uses here ahb name and calls it "AHB clock from dispcc".
>>
>> SM8250 won't match here either. Maybe this should be reworked to specify
>> limits here but not the names and actual clocks? IOW, drop entire oneOf?
> 
> SC7180 and SM8250 use platform-specific bindings (qcom,sc7180-mdss.yaml 
> and qcom,sm8250-mdss.yaml). This file is used only for older platforms 
> (msm8916, msm8996, etc).

Ah, right. It's a bit confusing to have bindings split into files:
1. mdss-common
2. mdss
3. device specific

but I guess fixing this would be another chunk of work.

> 
>>
>> There were a lot, a lot of changes to MDSS/DPU bindings recently, so I
>> am really loosing track what is done where and when.
>>
>> There are also few separate patchsets from you on the lists. Could they
>> be combined into one cleanup?
> 
> Ack, I'll merge them into a single patchset.
> 
>> I understand that sometimes new cleanup is needed after old cleanup
>> finished (I had the same with pinctrl), so it is not a complain.
>>
>> Another problem (and this time I complain) is that several of your
>> patchsets were sent, discussed and then without any notice applied. No
>> message that a patchset was applied to some tree. Look:
>>
>> https://lore.kernel.org/all/20221124001708.25720-2-a39.skl@xxxxxxxxx/
>> https://lore.kernel.org/all/09ed16e1-4af2-8fce-dab4-f6c0f09e688c@xxxxxxxxxx/
>>
>> Nothing. Silent application. If you are the maintainer which picks up
>> the patch, please always, always send message that they are applied.
>> Patchwork does it automatically, b4 can do it easily as well. If you use
>> other tools - use other tools for sending it. Otherwise things are
>> discussed on mailing lists, receive several comments and there is never
>> a resubmit but instead they show in the tree.
> 
> Unfortunately freedreno uses patchwork-fdo, which doesn't send 
> notifications. And the fdo fork is not supported by b4. I checked what 
> would be necessary to enable support in b4. Unfortunately several API 
> changes would be necessary. So this is a long process. But we are open 
> to any suggestions on how to improve the process. Currently all three 
> maintainers (Rob, Abhinav and me) keep the patch status in the 
> patchwork, but that's all.

And how other freedesktop.org patchwork users notify? Manually or is
there some hook? I notice only Exynos DRM where maintainer sends manual
"Applied" messages.

Best regards,
Krzysztof




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