[PATCH net-next 1/4] dt-bindings: net: document st,phy-wol property
Gatien CHEVALLIER
gatien.chevallier at foss.st.com
Mon Jul 21 05:54:39 PDT 2025
On 7/21/25 14:16, Krzysztof Kozlowski wrote:
> On 21/07/2025 14:10, Gatien CHEVALLIER wrote:
>> Hello Krzysztof,
>>
>> On 7/21/25 13:30, Krzysztof Kozlowski wrote:
>>> On 21/07/2025 13:14, Gatien Chevallier wrote:
>>>> The "st,phy-wol" property can be set to use the wakeup capability of
>>>> the PHY instead of the MAC.
>>>
>>>
>>> And why would that be property of a SoC or board? Word "can" suggests
>>> you are documenting something which exists, but this does not exist.
>> Can you elaborate a bit more on the "not existing" part please?
>
>
> Where does this property exist that you suggest that a new binding "can"
> use it?
>
I'm not sure if you're only targeting the wording here?
I found this property: "mediatek,mac-wol". Its non-presence sets the
same flag AFAICT.
I need to set the flag so that the stmmac_set_wol() in
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c eventually
reaches the PHY driver.
>>
>> For the WoL from PHY to be supported, the PHY line that is raised
>> (On nPME pin for this case) when receiving a wake up event has to be
>> wired to a wakeup event input of the Extended interrupt and event
>> controller(EXTI), and that's implementation dependent.
>
>
> So it is not "can" but some implementations do not have proper wiring.
> You need to justify your commits and changes.
>
Ok, does:
In case of proper wiring from the PHY to a wake up event input,
set the "st,phy-wol" to indicate that the PHY WoL capability is
preferred over the MAC one.
seems better?
>
>
> Best regards,
> Krzysztof
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