From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Robert Hancock <robert.hancock@calian.com>
Cc: andrew@lunn.ch, hkallweit1@gmail.com, davem@davemloft.net,
kuba@kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next] net: phy: marvell: Ensure SGMII auto-negotiation is enabled for 88E1111
Date: Sat, 13 Feb 2021 01:09:08 +0000 [thread overview]
Message-ID: <20210213010908.GO1463@shell.armlinux.org.uk> (raw)
In-Reply-To: <20210213002629.2557315-1-robert.hancock@calian.com>
On Fri, Feb 12, 2021 at 06:26:29PM -0600, Robert Hancock wrote:
> When 88E111 is operating in SGMII mode, auto-negotiation should be enabled
88E1111.
> on the SGMII side so that the link will come up properly with PCSes which
> normally have auto-negotiation enabled. This is normally the case when the
> PHY defaults to SGMII mode at power-up, however if we switched it from some
> other mode like 1000BaseX, as may happen in some SFP module situations,
> it may not be.
Do you actually have a module where this applies?
I have modules that do come up in 1000base-X mode, but do switch to
SGMII mode with AN just fine. So I'm wondering what the difference is.
--
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:[~2021-02-13 1:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-13 0:26 [PATCH net-next] net: phy: marvell: Ensure SGMII auto-negotiation is enabled for 88E1111 Robert Hancock
2021-02-13 1:09 ` Russell King - ARM Linux admin [this message]
2021-02-13 1:28 ` Robert Hancock
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