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

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Date:   Wed, 13 Jan 2021 04:56:53 +0100
From:   Marek Behún <kabel@...nel.org>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     Russell King - ARM Linux admin <linux@...linux.org.uk>,
        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 23:58:24 +0200
Vladimir Oltean <olteanv@...il.com> wrote:

> On Tue, Jan 12, 2021 at 07:06:29PM +0100, Marek Behún wrote:
> > 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.  
> 
> What do you mean here? What makes this specific to DSA?

https://www.spinics.net/lists/netdev/msg675899.html