From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: "Marek Behún" <kabel@kernel.org>
Cc: netdev@vger.kernel.org, Jakub Kicinski <kuba@kernel.org>,
David Miller <davem@davemloft.net>
Subject: Re: [PATCH net] net: dsa: mv88e6xxx: Don't support >1G speeds on 6191X on ports other than 10
Date: Thu, 4 Nov 2021 18:15:57 +0000 [thread overview]
Message-ID: <YYQjXVsLTRsTBBHa@shell.armlinux.org.uk> (raw)
In-Reply-To: <20211104171747.10509-1-kabel@kernel.org>
On Thu, Nov 04, 2021 at 06:17:47PM +0100, Marek Behún wrote:
> Model 88E6191X only supports >1G speeds on port 10. Port 0 and 9 are
> only 1G.
Interesting. The original commit says:
SERDESes can do USXGMII, 10GBASER and 5GBASER (on 6191X only one
SERDES is capable of more than 1g; USXGMII is not yet supported
with this change)
which is ambiguously worded - so I guess we now know that it's only
port 10 that supports speeds above 1G.
Can ports 0 / 1 / 10 be changed at runtime (iow, is the C_Mode field
writable on these ports?)
Thanks.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2021-11-04 18:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-04 17:17 [PATCH net] net: dsa: mv88e6xxx: Don't support >1G speeds on 6191X on ports other than 10 Marek Behún
2021-11-04 18:15 ` Russell King (Oracle) [this message]
2021-11-04 18:58 ` Marek Behún
2021-11-09 22:06 ` Andrew Lunn
2021-11-10 3:20 ` patchwork-bot+netdevbpf
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