[PATCH net-next v11 1/7] dt-bindings: phy: document the serdes PHY on sa8255p

[Bartosz Golaszewski]

On Tue, 30 Jun 2026 15:44:16 +0200, Bartosz Golaszewski <brgl at kernel.org> said:
> On Tue, 30 Jun 2026 12:23:16 +0200, Vinod Koul <vkoul at kernel.org> said:
>> On 29-06-26, 16:51, Geert Uytterhoeven wrote:
>>> > Russell King asked me to put the PHY logic for SCMI pm domains into the PHY
>>> > driver instead of the MAC driver where it was previously. Instead of cramming
>>> > both HLOS and firmware handling into the same driver, I figured it makes more
>>> > sense to have a dedicated, cleaner driver as the two share very little code (if
>>> > any).
>>>
>>> I think you are mixing up DT bindings and driver implementation?
>>
>> Should the bindings change if we have different driver and firmware
>> implementations? Isn't binding supposed to be agnostic of
>> implementations..?
>>
>
> The way sa8255p implements SCMI is with SMC exclusively but - since even base
> support is not yet upstream -  maybe it would be possible to expose SCMI clocks
> like some platforms do and reuse the same binding.
>
> Would it make sense?
>
> Bart
>

Scratch that. The firmware on sa8255p does not expose SCMI clock protocol, we
can only use devfs with this PHY so it's either the same binding document with
different properties depending on compatible or two separate bindings. I prefer
the latter because it's cleaner.

Bartosz