linux-kernel - Re: [RFC net-next] net: phy: Add basic support for Synopsys XPCS using a PHY driver

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Message-ID: <20200113133845.GD11788@lunn.ch>
Date:   Mon, 13 Jan 2020 14:38:45 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     netdev@...r.kernel.org, Joao Pinto <Joao.Pinto@...opsys.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-kernel@...r.kernel.org,
        Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [RFC net-next] net: phy: Add basic support for Synopsys XPCS
 using a PHY driver

On Mon, Jan 13, 2020 at 02:11:08PM +0100, Jose Abreu wrote:
> Adds the basic support for XPCS including support for USXGMII.

Hi Jose

Please could you describe the 'big picture'. What comes after the
XPCS? An SFP? A copper PHY? How in Linux do you combine this PHY and
whatever comes next using PHYLINK?

Or do only support backplane with this, and the next thing in the line
is the peers XPCS?

Thanks
	Andrew