Message-ID: <20250409101808.43d5a17d@kmaincent-XPS-13-7390>
Date: Wed, 9 Apr 2025 10:18:08 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Simon Horman <horms@...nel.org>, Andrew Lunn <andrew@...n.ch>, Heiner
 Kallweit <hkallweit1@...il.com>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo
 Abeni <pabeni@...hat.com>, Marek Behún <kabel@...nel.org>,
 Richard Cochran <richardcochran@...il.com>, Thomas Petazzoni
 <thomas.petazzoni@...tlin.com>, Maxime Chevallier
 <maxime.chevallier@...tlin.com>, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 2/2] net: phy: Add Marvell PHY PTP support

On Tue, 8 Apr 2025 18:32:04 +0100
"Russell King (Oracle)" <linux@...linux.org.uk> wrote:

> On Tue, Apr 08, 2025 at 04:49:34PM +0100, Simon Horman wrote:
> > On Mon, Apr 07, 2025 at 04:03:01PM +0200, Kory Maincent wrote:  
> > > From: Russell King <rmk+kernel@...linux.org.uk>
> > > 
> > > From: Russell King <rmk+kernel@...linux.org.uk>
> > > 
> > > Add PTP basic support for Marvell 88E151x PHYs. These PHYs support
> > > timestamping the egress and ingress of packets, but does not support
> > > any packet modification.
> > > 
> > > The PHYs support hardware pins for providing an external clock for the
> > > TAI counter, and a separate pin that can be used for event capture or
> > > generation of a trigger (either a pulse or periodic).  This code does
> > > not support either of these modes.
> > > 
> > > The driver takes inspiration from the Marvell 88E6xxx DSA and DP83640
> > > drivers.  The hardware is very similar to the implementation found in
> > > the 88E6xxx DSA driver, but the access methods are very different,
> > > although it may be possible to create a library that both can use
> > > along with accessor functions.
> > > 
> > > Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
> > > 
> > > Add support for interruption.
> > > Fix L2 PTP encapsulation frame detection.
> > > Fix first PTP timestamp being dropped.
> > > Fix Kconfig to depends on MARVELL_PHY.
> > > Update comments to use kdoc.
> > > 
> > > Co-developed-by: Kory Maincent <kory.maincent@...tlin.com>
> > > Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>  
> > 
> > Hi Kory,
> > 
> > Some minor feedback from my side.
> >   
> > > ---
> > > 
> > > Russell I don't know which email I should use, so I keep your old SOB.  
> > 
> > Russell's SOB seems to be missing.  
> 
> ... and anyway, I haven't dropped my patches, I'm waiting for the
> fundamental issue with merging Marvell PHY PTP support destroying the
> ability to use MVPP2 PTP support to be solved, and then I will post
> my patches.
> 
> They aren't dead, I'm just waiting for the issues I reported years ago
> with the PTP infrastructure to be resolved - and to be tested as
> resolved.
> 
> I'm still not convinced that they have been given Kory's responses to
> me (some of which I honestly don't understand), but I will get around
> to doing further testing to see whether enabling Marvell PHY PTP
> support results in MVPP2 support becoming unusable.
> 
> Kory's lack of communication with me has been rather frustrating.

You were in CC in all the series I sent and there was not a lot of review and
testing on your side. I know you seemed a lot busy at that time but I don't
understand what communication is missing here? 

Regards,
-- 
Köry Maincent, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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