Re: [PATCH v5 3/3] dt-binding: mediatek: add MediaTek mt8195 MDP3 components

[Krzysztof Kozlowski]

On 13/09/2023 10:39, Moudy Ho (何宗原) wrote:

>>> @@ -63,7 +64,6 @@ properties:
>>>  required:
>>>    - compatible
>>>    - reg
>>> -  - interrupts
>>
>> Why? commit msg tells nothing about it. Why interrupt is not erquired
>> in
>> mt8173? How dropping such requirement is anyhow related to mt8195?
>>
>>
> The signals of the MDP engines are completely controlled by MTK's MUTEX
> for starting and stopping frame processing, eliminating the need for
> additional interrupts.

Then it does not look like related to this patch at all.

...

>>>  
>>>    reg:
>>>      maxItems: 1
>>> @@ -50,17 +51,19 @@ properties:
>>>      maxItems: 1
>>>  
>>>    clocks:
>>> -    items:
>>> -      - description: RDMA clock
>>> -      - description: RSZ clock
>>> +    oneOf:
>>> +      - items:
>>> +          - description: RDMA clock
>>> +          - description: SRAM shared component clock
>>> +      - items:
>>> +          - description: RDMA clock
>>
>> Why now mt8183 can have SRAM clock optional? How changing mt8183 is
>> related to this patch?
>>
>> I'll finish the review, sorry fix basics here.
>>
>> Best regards,
>> Krzysztof
>>
> The RDMA of only the 8183 needed to share SRMA with other component due
> to the old desgin.
> I attempted to describe both the situation of the 8183 and new designs
> like the 8195, but it appears that this writing style may lead to
> misunderstandings.
> I am unsure if there are any ways to enhance it.

Just like many other bindings, just look at Qualcomm, use allOf to
restrict entries per variants.

Best regards,
Krzysztof