Re: [PATCH v2 3/3] dt-bindings: phy: realtek: Add the doc about the Realtek SoC USB 2.0/3.0 PHY

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On 30/05/2023 04:53, Stanley Chang[昌育德] wrote:
>>> +properties:
>>> +  compatible:
>>> +    enum:
>>> +      - realtek,usb3phy
>>> +      - realtek,rtd-usb3phy
>>> +      - realtek,rtd1295-usb3phy
>>> +      - realtek,rtd1619-usb3phy
>>> +      - realtek,rtd1319-usb3phy
>>> +      - realtek,rtd1619b-usb3phy
>>> +      - realtek,rtd1319d-usb3phy
> 
>> Ignoring everything else, because I really want Krzysztof or Rob to
>> review this rather than me, but what's going on here with the
>> compatibles?
>> What hardware do "usbNphy" and "rtd-usbNphy" represent?
>>
>> You have device-specific compatibles, which is great, but you also allow
>> only those two generic ones. I had a _brief_ look at the driver, and it
>> seems like there is no decision making done based on the compatibles,
>> only on the properties. Is that correct?
>> If it is, I would understand having "realtek,usb3phy" as a fallback
>> compatible for "realtek,rtd1619-usb3phy", but I do not get the current
>> setup.
> 
> This driver is compatible with all Realtek RTD SoCs without specifying different settings.
> So use "realtek,usb3phy" as fallback compatible for all SoCs.

Binding says something entirely else...

Best regards,
Krzysztof




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