linux-kernel - Re: [PATCH net-next 09/13] net: mvpp2: dynamic reconfiguration of the PHY mode

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Date:   Thu, 24 Aug 2017 19:45:19 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     Antoine Tenart <antoine.tenart@...e-electrons.com>,
        davem@...emloft.net, kishon@...com, jason@...edaemon.net,
        sebastian.hesselbarth@...il.com,
        gregory.clement@...e-electrons.com,
        thomas.petazzoni@...e-electrons.com, nadavh@...vell.com,
        linux-kernel@...r.kernel.org, mw@...ihalf.com, stefanc@...vell.com,
        miquel.raynal@...e-electrons.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 09/13] net: mvpp2: dynamic reconfiguration of
 the PHY mode

Hi Russell

> I think you're all getting confused.

Yes, i was at least.

> The 88x3310 driver in the kernel knows about these combinations and
> sets the phy interface parameter correctly depending on whether the
> PHY has configured itself for copper at whatever speed or SFP+.

So when the PHY decides to swap from copper to fibre etc, is the
phylib state machine kept up to date. Does it see a down, followed by
an up?

   Andrew