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" <hkallweit1@gmail.com>,
"davem@davemloft.net" <davem@davemloft.net>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [PATCH] net: phy: marvell: add special handling of Finisar modules with 81E1111
Date: Mon, 19 Oct 2020 23:21:53 +0100 [thread overview]
Message-ID: <20201019222153.GZ1551@shell.armlinux.org.uk> (raw)
In-Reply-To: <20201019221232.GB139700@lunn.ch>
On Tue, Oct 20, 2020 at 12:12:32AM +0200, Andrew Lunn wrote:
> > The auto-negotiation is a bit of a weird thing in this case, as there
> > are two negotiations occurring, the 1000BaseX between the PCS/PMA PHY
> > and the module PHY, and the 1000BaseT between the module PHY and the
> > copper link partner. I believe the 88E1111 has some smarts to delay the
> > copper negotiation until it gets the advertisement over 1000BaseX, uses
> > those to figure out its advertisement, and then uses the copper link
> > partner's response to determine the 1000BaseX response.
>
> But as far as i know you can only report duplex and pause over
> 1000BaseX, not speed, since it is always 1G.
That is correct.
--
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 22:22 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
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 [this message]
2020-10-19 22:26 ` Robert Hancock
2020-10-19 22:03 ` Russell King - ARM Linux admin
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