From: andrew@lunn.ch (Andrew Lunn)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/1] phy: Add 2.5G SGMII interface mode
Date: Thu, 30 Nov 2017 16:50:50 +0100 [thread overview]
Message-ID: <20171130155050.GD7483@lunn.ch> (raw)
In-Reply-To: <1512016235-15909-1-git-send-email-Bhaskar.Upadhaya@nxp.com>
On Thu, Nov 30, 2017 at 10:00:35AM +0530, Bhaskar Upadhaya wrote:
> Add 2.5G SGMII interface mode(PHY_INTERFACE_MODE_2500SGMII)
> in existing phy_interface list.As auto-negotiation is not
> supported for 2.5G SGMII
Hi Bhaskar
I've been thinking about this some more...
Is auto negotiation not supported in 2.5G SGMII in general, or just in
the system you are using? Is it the PHY or the MAC which does not
support it. Are we going to get into trouble if we find an 2.5G SGMII
link which does negotiate?
My understanding is that one of the main differences between SGMII and
1000BASE-X is the negotiation.
Andrew
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Lunn <andrew@lunn.ch>
To: Bhaskar Upadhaya <Bhaskar.Upadhaya@nxp.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/1] phy: Add 2.5G SGMII interface mode
Date: Thu, 30 Nov 2017 16:50:50 +0100 [thread overview]
Message-ID: <20171130155050.GD7483@lunn.ch> (raw)
In-Reply-To: <1512016235-15909-1-git-send-email-Bhaskar.Upadhaya@nxp.com>
On Thu, Nov 30, 2017 at 10:00:35AM +0530, Bhaskar Upadhaya wrote:
> Add 2.5G SGMII interface mode(PHY_INTERFACE_MODE_2500SGMII)
> in existing phy_interface list.As auto-negotiation is not
> supported for 2.5G SGMII
Hi Bhaskar
I've been thinking about this some more...
Is auto negotiation not supported in 2.5G SGMII in general, or just in
the system you are using? Is it the PHY or the MAC which does not
support it. Are we going to get into trouble if we find an 2.5G SGMII
link which does negotiate?
My understanding is that one of the main differences between SGMII and
1000BASE-X is the negotiation.
Andrew
next prev parent reply other threads:[~2017-11-30 15:50 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-30 4:30 [PATCH 1/1] phy: Add 2.5G SGMII interface mode Bhaskar Upadhaya
2017-11-30 4:30 ` Bhaskar Upadhaya
2017-11-30 15:50 ` Andrew Lunn [this message]
2017-11-30 15:50 ` Andrew Lunn
2017-11-30 17:16 ` Bhaskar Upadhaya
2017-11-30 17:16 ` Bhaskar Upadhaya
2017-11-30 17:34 ` David Miller
2017-11-30 17:34 ` David Miller
2017-11-30 17:41 ` Andrew Lunn
2017-11-30 17:41 ` Andrew Lunn
2017-11-30 18:15 ` Russell King - ARM Linux
2017-11-30 18:15 ` Russell King - ARM Linux
2017-11-30 18:26 ` Andrew Lunn
2017-11-30 18:26 ` Andrew Lunn
2017-11-30 18:53 ` Russell King - ARM Linux
2017-11-30 18:53 ` Russell King - ARM Linux
2017-12-01 18:40 ` Bhaskar Upadhaya
2017-12-01 18:40 ` Bhaskar Upadhaya
2017-12-01 18:44 ` Florian Fainelli
2017-12-01 18:44 ` Florian Fainelli
2017-12-01 19:12 ` Andrew Lunn
2017-12-01 19:12 ` Andrew Lunn
2017-11-30 17:33 ` Russell King - ARM Linux
2017-11-30 17:33 ` Russell King - ARM Linux
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