[PATCH v2 2/2] phy: exyons5-usbdrd: support HS phy for ExynosAutov920

[Neil Armstrong]

On 21/05/2025 14:58, Krzysztof Kozlowski wrote:
> On 21/05/2025 14:56, 'Neil Armstrong' wrote:
>>>> <snip>
>>>>
>>>>> +	}, {
>>>>> +		.compatible = "samsung,exynosautov920-usb31drd-phy",
>>>>> +		.data = &exynosautov920_usb31drd_phy
>>>>
>>>> All those new ops are only called when matching this compatible, it it really
>>>> necessary to check the version ? is there "samsung,exynosautov920-usb31drd-
>>>> phy" PHYs with version different from 3 in the wild ?
>>>>
>>>
>>> This SoC has a single USB 3.1 DRD combo phy of version v400 (major : minor versions) and three USB2.0
>>> DRD phy v303 (major : minor versions) controllers those only support the UTMI+ interface. Currently,
>>> supporting only v303 phys in this patch-set, and planning v400 phy later (soon).
>>>
>>> Yes, there's v400 phy version that is different from v303 phy. Hence, phy version check is needed to support both the phys for same compatible.
>>
>> OK so add 2 compatibles, one for the usb31drd and one for the usb2drd since those are 2 difference hardware.
> 
> ...unless this is fully detectable hardware, then use fallbacks and only
> one compatible in the driver.

But use proper compatible like "samsung,exynosautov92-usb-phy", but still those are
2 very different PHYs connected to different HW blocks, I won't mix USB3.1 and USB2 PHY
compatibles.

Neil

> 
> Best regards,
> Krzysztof