Re: [PATCH 1/2] dt-bindings: phy: mediatek: tphy: add a property for force-mode switch

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 30/11/2023 02:51, Chunfeng Yun (云春峰) wrote:
>>> 3. How about we revise the description as follows for more
>> precisely?
>>>
>>> mediatek,force-mode:
>>>    description:
>>>      The force mode is used to manually switch the shared PHY mode
>>>      between USB and PCIe. When force-mode is set, the USB 3.0 mode
>>>      will be selected. This is typically required for older SoCs
>>>      that do not automatically manage PHY mode switching.
>>>      For newer SoCs that support it, it is preferable to use the
>>>      "mediatek,syscon-type" property instead.
>>>    type: boolean
>>
>> Again, what is force-mode? 
> Our DE describe this behavior as force-mode, as you see, the driver

What is "DE"?

> power down controller and reset pipe to set the mode directly we want,

So force-mode is driver behavior?

> but usually the phy controller switch to the mode automatically
> according to the external signal, e.g. trapping pin, efuse etc.
> 
>> It looks like you wrote bindings for the
>> driver behavior. Bindings describe hardware, not how the driver
>> should
>> behave. The property might be reasonable, but you must describe here
>> hardware characteristics/issue/etc.

You must address this, in such case.



Best regards,
Krzysztof