netdev - Re: [PATCH net-next v14 5/6] net: dsa: mv88e6xxx: Add support for mv88e6393x family of Marvell

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Date:   Tue, 12 Jan 2021 19:06:29 +0100
From:   Marek Behún <kabel@...nel.org>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc:     Vladimir Oltean <olteanv@...il.com>, netdev@...r.kernel.org,
        pavana.sharma@...i.com, vivien.didelot@...il.com,
        f.fainelli@...il.com, kuba@...nel.org, lkp@...el.com,
        davem@...emloft.net, ashkan.boldaji@...i.com, andrew@...n.ch,
        Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: Re: [PATCH net-next v14 5/6] net: dsa: mv88e6xxx: Add support for
 mv88e6393x family of Marvell

On Tue, 12 Jan 2021 16:29:09 +0000
Russell King - ARM Linux admin <linux@...linux.org.uk> wrote:

> I'm seriously thinking about changing the phylink_validate() interface
> such that the question of which link _modes_ are supported no longer
> comes up with MAC drivers, but instead MAC drivers say what interface
> modes, speeds for each interface mode, duplexes for each speed are
> supported.

BTW this would also solve the situation where DSA needs to know which
interface modes are supported on a particular port to know which modes
we can try on SFP connected to a DSA port.