From mboxrd@z Thu Jan  1 00:00:00 1970
From: Antoine Tenart <antoine.tenart@bootlin.com>
Subject: Re: [PATCH net-next 02/10] net: phy: phylink: allow 10GKR interface
 to use in-band negotiation
Date: Mon, 19 Mar 2018 14:10:09 +0100
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Cc: Antoine Tenart <antoine.tenart@bootlin.com>,
        Russell King - ARM Linux <linux@armlinux.org.uk>,
        davem@davemloft.net, kishon@ti.com, gregory.clement@bootlin.com,
        jason@lakedaemon.net, sebastian.hesselbarth@gmail.com,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        thomas.petazzoni@bootlin.com, maxime.chevallier@bootlin.com,
        miquel.raynal@bootlin.com, nadavh@marvell.com, stefanc@marvell.com,
        ymarkman@marvell.com, mw@semihalf.com,
        linux-arm-kernel@lists.infradead.org
To: Andrew Lunn <andrew@lunn.ch>
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Hi Andrew,

On Mon, Mar 19, 2018 at 01:59:53PM +0100, Andrew Lunn wrote:
> 
> If they don't have PHYs, how are the connected to the outside world?

On 7k/8k you have the following scheme for 10G only interfaces:

   MAC -- Comphy -- PHY -- SFP cage -- ...

Or

   MAC -- Comphy -- SFP cage -- ...

The comphy provides serdes lanes, and can be configured in various
modes (SGMII, 2500SGMII, 10GKR...).

Antoine

-- 
Antoine Ténart, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com