linux-kernel - Re: [PATCH v2 10/11] ARM: dts: stm32: add ethernet1 and ethernet2 for STM32MP135F-DK board

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Date: Thu, 16 May 2024 14:22:54 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Alexandre TORGUE <alexandre.torgue@...s.st.com>
Cc: Marek Vasut <marex@...x.de>,
	Christophe Roullier <christophe.roullier@...s.st.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Richard Cochran <richardcochran@...il.com>,
	Jose Abreu <joabreu@...opsys.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, 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 v2 10/11] ARM: dts: stm32: add ethernet1 and ethernet2
 for STM32MP135F-DK board

> > I suspect it might make sense to add this WoL part separately from the
> > actual ethernet DT nodes, so ethernet could land and the WoL
> > functionality can be added when it is ready ?
> 
> If at the end we want to have this Wol from PHY then I agree we need to
> wait. We could push a WoL from MAC for this node before optee driver patches
> merge but not sure it makes sens.

In general, it is better if the PHY does WoL, since the MAC can then
be powered down. MAC WoL should only be used when the PHY does not
support the requested WoL configuration, but the MAC can. And
sometimes you need to spread it over both the PHY and the MAC.

	Andrew