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From: David Miller <>
Subject: Re: [PATCH net] net: mvneta: Don't advertise 2.5G modes
Date: Fri, 16 Nov 2018 19:23:59 -0800 (PST)	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

From: Maxime Chevallier <>
Date: Fri,  9 Nov 2018 09:17:33 +0100

> Using 2.5G speed relies on the SerDes lanes being configured
> accordingly. The lanes have to be reconfigured to switch between
> 1G and 2.5G, and for now only the bootloader does this configuration.
> In the case we add a Comphy driver to handle switching the lanes
> dynamically, it's better for now to stick with supporting only 1G and
> add advertisement for 2.5G once we really are capable of handling both
> speeds without problem.
> Since the interface mode is initialy taken from the DT, we want to make
> sure that adding comphy support won't break boards that don't update
> their dtb.
> Fixes: da58a931f248 ("net: mvneta: Add support for 2500Mbps SGMII")
> Reported-by: Andrew Lunn <>
> Reported-by: Russell King <>
> Signed-off-by: Maxime Chevallier <>


      parent reply	other threads:[~2018-11-17  3:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-09  8:17 Maxime Chevallier
2018-11-09  9:57 ` Russell King - ARM Linux
2018-11-17  3:23 ` David Miller [this message]

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