linux-kernel - Re: [PATCH net-next 1/4] dt-bindings: net: document st,phy-wol property

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Message-ID: <f5c4bb6d-4ff1-4dc1-9d27-3bb1e26437e3@foss.st.com>
Date: Mon, 21 Jul 2025 14:10:48 +0200
From: Gatien CHEVALLIER <gatien.chevallier@...s.st.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
        Andrew Lunn
	<andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric
 Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni
	<pabeni@...hat.com>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Christophe Roullier <christophe.roullier@...s.st.com>,
        Andrew Lunn
	<andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
        Russell King
	<linux@...linux.org.uk>, Simon Horman <horms@...nel.org>,
        Tristram Ha
	<Tristram.Ha@...rochip.com>,
        Florian Fainelli <florian.fainelli@...adcom.com>
CC: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next 1/4] dt-bindings: net: document st,phy-wol
 property

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?

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.

Best regards,
Gatien

> 
> Best regards,
> Krzysztof