Re: [PATCH v4 1/2] dt-bindings: phy: ti: phy-gmii-sel: Add bindings for J7200

From: Krzysztof Kozlowski
Date: Tue Sep 06 2022 - 03:03:20 EST


On 06/09/2022 07:02, Siddharth Vadapalli wrote:
>>>
>>> Please let me know if the above description is fine.
>>
>> Hm, but that's a phy node, not address of register... Isn't this a phy
>> node representing the phy of the CPSW MAC ports?
>
> Despite it being a phy node, the phy-gmii-sel driver actually uses this
> node to obtain the address of the CTRLMMR_ENETx_CTRL registers which
> correspond to the CPSW MAC configuration and are therefore unrelated to
> the PHY. Please let me know if my suggested description would be fine.

Either I miss some more pieces or this is wrong design. The phy node
should not be used to pass some addresses somewhere. It is used to
define a device which will be instantiated (as parent is simple-mfd). If
you use it only to obtain some address, not to describe child device,
then this is wrong property type.

Best regards,
Krzysztof