[PATCH v3 1/9] dt-bindings: phy: Document ST STM32MP25 USB2-FEMTO PHY

Krzysztof Kozlowski krzk at kernel.org
Thu Aug 27 23:37:27 PDT 2026


On 28/08/2026 01:14, Marek Vasut wrote:
> On 8/27/26 11:33 PM, Krzysztof Kozlowski wrote:
>> On 27/08/2026 16:53, Marek Vasut wrote:
>>> On 8/27/26 2:54 PM, Krzysztof Kozlowski wrote:
>>>> On 22/08/2026 09:46, Marek Vasut wrote:
>>>>> +description:
>>>>> +  USB2 PHY block in STM32 is attached to USB 2.0 Host controller and
>>>>> +  USB 2.0 side of DWC3 DRD controller, and provides the USB LS/FS/HS
>>>>> +  connectivity. Both PHYs are the FEMTO-PHY, but their configuration
>>>>> +  bits in the system control register are different for each variant.
>>>>> +
>>>>> +maintainers:
>>>>> +  - Fabrice Gasnier <fabrice.gasnier at foss.st.com>
>>>>> +  - Marek Vasut <marex at nabladev.com>
>>>>> +  - Pankaj Dev <pankaj.dev at st.com>
>>>>> +
>>>>> +properties:
>>>>> +  compatible:
>>>>> +    enum:
>>>>> +      - st,stm32mp25-usb2phy1
>>>>> +      - st,stm32mp25-usb2phy2
>>>>> +
>>>>> +  "#clock-cells":
>>>>> +    const: 1
>>>>> +
>>>>
>>>> As pointed out by different patchset built on top of it, this is wrong.
>>>
>>> What is wrong in this (V3) of the patchset ? I think the ST patches were
>>> fixing up V2 and what they were fixing up is already fixed here in V3.
>>
>> Probably I got confused... but I had impression the ST patches were
>> adding here "reg" property, no?
> It is there in V3:
> 
> "
> +  "#clock-cells":
> +    const: 1
> +
> +  "#phy-cells":
> +    const: 0
> +
> +  reg: <------------------ HERE
> +    maxItems: 1
> +

Ah, indeed. BTW, reg usually follows compatible.

Best regards,
Krzysztof



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