netdev - Re: [PATCH 00/10] Convert mvneta to phylink

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Message-ID: <20180102172728.GA5102@n2100.armlinux.org.uk>
Date:   Tue, 2 Jan 2018 17:27:28 +0000
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH 00/10] Convert mvneta to phylink

On Tue, Jan 02, 2018 at 05:22:42PM +0000, Russell King - ARM Linux wrote:
> Hi,
> 
> This series converts mvneta to use phylink, which is necessary to
> support the SFP cages on SolidRun's Clearfog platform.  This series just
> converts mvneta without adding the DT parts - having discussed with
> Andrew, we believe we're too close to the merge window to submit that
> patch.
> 
> I've split the "net: mvneta: convert to phylink" patch up to make it
> easier to review, and in doing so, spotted some minor corner cases that
> needed to be fixed along the way.
> 
> This series depends on the previously merged phylink patches in netdev,
> along with the recently reviewed 7 patch series "Resolve races in phy
> accessors" without which, the race described in patch 5 of that series
> is very evident when triggering a dummy hibernate cycle.
> 
> This series also illustrates how to convert mvpp2 to phylink.
> 
> mvneta is the only user of the fixed_phy_update_state() API, and this
> becomes redundant with the conversion.
> 
> It would be good to get this series not only reviewed, but also
> independently tested to ensure that I haven't missed anything - I only
> have the Clearfog platform to test on, and that doesn't support all the
> different interface modes that mvneta supports.
> 
> A particularly interesting side effect of this series is that DSA
> switches no longer need the "CPU" port and DSA facing MAC ethernet
> instance to be marked as a fixed link anymore with mvneta - we can use
> 1000BaseX mode, and the DSA to CPU link will use the 802.3z negotiation
> to determine the link properties without needing the link parameters to
> be explicitly stated in DT - that is a subject of a future patch.
> 
>  drivers/net/ethernet/marvell/Kconfig  |   2 +-
>  drivers/net/ethernet/marvell/mvneta.c | 687 ++++++++++++++++++++--------------
>  drivers/net/phy/fixed_phy.c           |  31 --
>  include/linux/phy_fixed.h             |   9 -
>  4 files changed, 405 insertions(+), 324 deletions(-)

Of course, this series is for net-next, not net... forgot to add that
annotation, sorry.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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