netdev - Re: [PATCH net-next v2 3/9] net: phy: Allow PHY drivers to report isolation support

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Message-ID: <20241007115250.5c9e2f3e@device-21.home>
Date: Mon, 7 Oct 2024 11:52:50 +0200
From: Maxime Chevallier <maxime.chevallier@...tlin.com>
To: Oleksij Rempel <o.rempel@...gutronix.de>
Cc: davem@...emloft.net, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com, Andrew Lunn
 <andrew@...n.ch>, Jakub Kicinski <kuba@...nel.org>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Russell King
 <linux@...linux.org.uk>, linux-arm-kernel@...ts.infradead.org, Christophe
 Leroy <christophe.leroy@...roup.eu>, Herve Codina
 <herve.codina@...tlin.com>, Florian Fainelli <f.fainelli@...il.com>, Heiner
 Kallweit <hkallweit1@...il.com>, Vladimir Oltean <vladimir.oltean@....com>,
 Marek Behún <kabel@...nel.org>, Köry
 Maincent <kory.maincent@...tlin.com>
Subject: Re: [PATCH net-next v2 3/9] net: phy: Allow PHY drivers to report
 isolation support

On Fri, 4 Oct 2024 18:46:20 +0200
Oleksij Rempel <o.rempel@...gutronix.de> wrote:

> On Fri, Oct 04, 2024 at 06:15:53PM +0200, Maxime Chevallier wrote:
> > Some PHYs have malfunctionning isolation modes, where the MII lines
> > aren't correctly set in high-impedance, potentially interfering with the
> > MII bus in unexpected ways. Some other PHYs simply don't support it.  
> 
> Do we have in this case multiple isolation variants like high-impedance
> and "the other one"? :)  Do the "the other one" is still usable for some
> cases like Wake on LAN without shared xMII?

I don't think there are multiple variants, at least I didn't see any :/

Maxime