netdev - C45 support and mdiobus

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Message-ID: <3bbd1d78-b896-2a81-83cf-7dad2f73bae9@synopsys.com>
Date:   Thu, 9 Aug 2018 14:54:11 +0100
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: C45 support and mdiobus_scan

Hi All,

I'm preparing to add support for 10G in stmmac and I noticed that
Generic 10G PHY needs C45 support. Digging through the
registration callbacks for phy that are used in stmmac I reached
to mdiobus_scan() and the following call:

phydev = get_phy_device(bus, addr, false);

The last parameter is "is_c45", and is always being set to false ...

Does this mean that I can't use the Generic 10G PHY in stmmac? I
don't mind link being fixed for 10G for now.

(Notice I'm using a PCI based setup so no DT bindings can help me
for this).

Thanks and Best Regards,
Jose Miguel Abreu