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From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: "Marek Behún" <kabel@kernel.org>
Cc: andrew@lunn.ch, netdev@vger.kernel.org, olteanv@gmail.com,
	pavana.sharma@digi.com
Subject: Re: mv88e6xxx: 2500base-x inband AN is broken on Amethyst? what to do?
Date: Wed, 13 Jan 2021 21:48:00 +0000	[thread overview]
Message-ID: <20210113214800.GM1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <20210113223729.33c8bb65@kernel.org>

On Wed, Jan 13, 2021 at 10:37:29PM +0100, Marek Behún wrote:
> On Wed, 13 Jan 2021 21:21:25 +0000
> Russell King - ARM Linux admin <linux@armlinux.org.uk> wrote:
> > One thing that I don't know is whether the GPON SFP ONT modules that
> > use 2500base-x will still function with AN disabled - although I have
> > the modules, it appeared that they both needed a connection to the ONU
> > to switch from 1000base-x to 2500base-x on the host side - and as I
> > don't have an ONU I can test with, I have no way to check their
> > behaviour.
> 
> We have an ISP here in Prague who is willing to lend us some GPON
> ONU devices to get GPON SFP modules work on Turris. I will ask him if he
> has one capable of 2.5g and try to borrow it.

I know the Huawei MA5671A and the Nokia 3FE46541AA are - see the quirks
table in sfp-bus.c ! They come from an ISP on the American continent
who really really wanted these modules to link at 2.5Gbps.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

      reply	other threads:[~2021-01-13 21:51 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13  0:18 mv88e6xxx: 2500base-x inband AN is broken on Amethyst? what to do? Marek Behún
2021-01-13  4:22 ` Marek Behun
2021-01-13 10:28 ` Russell King - ARM Linux admin
2021-01-13 17:03   ` Marek Behún
2021-01-13 20:08   ` Marek Behún
2021-01-13 21:21     ` Russell King - ARM Linux admin
2021-01-13 21:37       ` Marek Behún
2021-01-13 21:48         ` Russell King - ARM Linux admin [this message]

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