From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Robert Hancock <robert.hancock@calian.com>,
hkallweit1@gmail.com, davem@davemloft.net,
netdev@vger.kernel.org
Subject: Re: [PATCH] net: phy: marvell: add special handling of Finisar modules with 81E1111
Date: Mon, 19 Oct 2020 22:09:09 +0100 [thread overview]
Message-ID: <20201019210909.GX1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <20201019210654.GV139700@lunn.ch>
On Mon, Oct 19, 2020 at 11:06:54PM +0200, Andrew Lunn wrote:
> On Mon, Oct 19, 2020 at 02:49:13PM -0600, Robert Hancock wrote:
> > The Finisar FCLF8520P2BTL 1000BaseT SFP module uses a Marvel 81E1111 PHY
> > with a modified PHY ID, and by default does not have 1000BaseX
> > auto-negotiation enabled, which is not generally desirable with Linux
> > networking drivers.
>
> I could be wrong, but i thought phylink used SGMII with copper SFPs,
> so that 10/100 works as well as 1G. So why is 1000BaseX an issue?
> Do you have a MAC which cannot do SGMII, only 1000BaseX?
Indeed it does.
--
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:[~2020-10-19 21:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-19 20:49 [PATCH] net: phy: marvell: add special handling of Finisar modules with 81E1111 Robert Hancock
2020-10-19 21:00 ` Andrew Lunn
2020-10-19 21:43 ` Robert Hancock
2020-10-19 21:59 ` Andrew Lunn
2020-10-19 22:11 ` Robert Hancock
2020-10-19 21:06 ` Andrew Lunn
2020-10-19 21:09 ` Russell King - ARM Linux admin [this message]
2020-10-19 21:08 ` Russell King - ARM Linux admin
2020-10-19 21:32 ` Robert Hancock
2020-10-19 21:45 ` Andrew Lunn
2020-10-19 21:59 ` Robert Hancock
2020-10-19 22:12 ` Andrew Lunn
2020-10-19 22:21 ` Russell King - ARM Linux admin
2020-10-19 22:26 ` Robert Hancock
2020-10-19 22:03 ` Russell King - ARM Linux admin
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