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From: "Köry Maincent" <kory.maincent@bootlin.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: "Russell King (Oracle)" <linux@armlinux.org.uk>,
	davem@davemloft.net, f.fainelli@gmail.com, hkallweit1@gmail.com,
	kuba@kernel.org, netdev@vger.kernel.org,
	richardcochran@gmail.com,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>
Subject: Re: [PATCH RFC net-next] net: phy: add Marvell PHY PTP support [multicast/DSA issues]
Date: Fri, 28 Apr 2023 10:51:40 +0200	[thread overview]
Message-ID: <20230428105140.1710c1fc@kmaincent-XPS-13-7390> (raw)
In-Reply-To: <8ad8c6ce-1a3e-4f80-84c8-d6921613cbb9@lunn.ch>

On Thu, 27 Apr 2023 18:50:47 +0200
Andrew Lunn <andrew@lunn.ch> wrote:

> > As we are currently moving forward on PTP core to resolve this issue, I
> > would like to investigate your PHY PTP patch in parallel. Indeed it does
> > not work very well on my side.
> > 
> > The PTP UDP v4 and v6 work only if I add "--tx_timestamp_timeout 20" and the
> > PTP IEEE 802.3 (802.1AS) does not work at all.
> > On PTP IEEE 802.3 network transport ("ptp4l -2") I get continuously rx
> > timestamp overrun:
> > Marvell 88E1510 ff0d0000.ethernet-ffffffff:01: rx timestamp overrun (5)
> > Marvell 88E1510 ff0d0000.ethernet-ffffffff:01: rx timestamp overrun (5)
> > 
> > I know it's been a long time but does it ring a bell on your memory?  
> 
> How are you talking to the PHY? I had issues with slow MDIO busses,
> especially those embedded within an Ethernet switch. You end up with
> MDIO over MDIO which has a lot of latency. I _think_ i added some
> patches to ptp4l to deal with this, but i forget exactly what landed.

I am talking to the PHY through a simple MDIO bus.
The current PTP support from Russell does not support interrupts. Could it be
the cause of needing bigger tx timestamp timeout? 

  reply	other threads:[~2023-04-28  8:52 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-14 16:26 [PATCH RFC net-next] net: phy: add Marvell PHY PTP support Russell King
2020-07-15 18:38 ` Andrew Lunn
2020-07-15 18:56   ` Russell King - ARM Linux admin
2020-07-16 11:33     ` Russell King - ARM Linux admin
2020-07-16 20:53       ` Richard Cochran
2020-07-16 20:48 ` Richard Cochran
2020-07-17  7:54   ` Kurt Kanzenbach
2020-07-18  2:24     ` Richard Cochran
2020-07-20 14:21       ` Richard Cochran
2020-07-20 14:37         ` Kurt Kanzenbach
2020-07-26 23:48 ` Russell King - ARM Linux admin
2020-07-29 10:58 ` Russell King - ARM Linux admin
2020-07-29 13:19   ` Richard Cochran
2020-07-29 13:28     ` Russell King - ARM Linux admin
2020-07-29 22:07       ` Russell King - ARM Linux admin
2020-07-29 22:53         ` Vladimir Oltean
2020-07-30 15:53         ` Richard Cochran
2020-07-30 18:38           ` Russell King - ARM Linux admin
2020-07-30 19:32             ` Richard Cochran
2020-07-30 19:44               ` Russell King - ARM Linux admin
2020-07-30 11:06     ` [PATCH RFC net-next] net: phy: add Marvell PHY PTP support [multicast/DSA issues] Russell King - ARM Linux admin
2020-07-30 11:54       ` Russell King - ARM Linux admin
2020-07-30 12:47         ` Russell King - ARM Linux admin
2023-02-27 14:40           ` Köry Maincent
2023-02-27 15:20             ` Russell King (Oracle)
2023-02-27 17:30               ` Köry Maincent
2023-02-27 17:42                 ` Russell King (Oracle)
2023-02-27 19:45               ` Richard Cochran
2023-02-27 20:09                 ` Russell King (Oracle)
2023-02-27 20:19                   ` Richard Cochran
2023-02-28 12:07                     ` Russell King (Oracle)
2023-02-28 13:16                       ` Köry Maincent
2023-02-28 13:36                         ` Russell King (Oracle)
2023-02-28 14:50                           ` Köry Maincent
2023-02-28 15:16                         ` Richard Cochran
2023-02-28 15:33                           ` Andrew Lunn
2023-02-28 21:13                             ` Richard Cochran
2023-02-28 16:27                           ` Russell King (Oracle)
2023-02-28 16:44                             ` Michael Walle
2023-02-28 16:58                               ` Russell King (Oracle)
2023-02-28 20:13                                 ` Michael Walle
2023-02-28 21:11                                   ` Richard Cochran
2023-02-28 21:24                             ` Richard Cochran
2023-02-28 22:26                             ` Jakub Kicinski
2023-02-28 22:40                               ` Russell King (Oracle)
2023-02-28 22:59                                 ` Jakub Kicinski
2023-03-01 16:04                                   ` Köry Maincent
2023-03-02  4:36                                     ` Richard Cochran
2023-03-02 11:49                                       ` Russell King (Oracle)
2023-03-02 16:49                                         ` Jakub Kicinski
2023-03-02 17:06                                           ` Köry Maincent
2023-03-02 17:23                                             ` Jakub Kicinski
2023-03-03 13:12                                               ` Köry Maincent
2023-03-03 23:28                                                 ` Jakub Kicinski
2023-03-02 17:26                                           ` Russell King (Oracle)
2023-03-03 10:20                                             ` Michael Walle
2023-03-03 13:20                                               ` Andrew Lunn
2023-03-03 13:34                                                 ` Köry Maincent
2023-03-03 13:59                                                   ` Andrew Lunn
2023-03-03 14:03                                                 ` Russell King (Oracle)
2023-03-03 16:34                                                   ` Andrew Lunn
2023-03-03 17:32                                                     ` Richard Cochran
2023-03-03 17:35                                                       ` Richard Cochran
2023-03-03 23:40                                                   ` Jakub Kicinski
2023-03-02 21:28                                           ` Richard Cochran
2023-03-02 21:19                                         ` Richard Cochran
2023-04-27 15:13               ` Köry Maincent
2023-04-27 16:50                 ` Andrew Lunn
2023-04-28  8:51                   ` Köry Maincent [this message]
2020-07-30 15:50         ` Richard Cochran
2020-07-31 14:41         ` Andrew Lunn
2023-03-02 10:37   ` [PATCH RFC net-next] net: phy: add Marvell PHY PTP support Köry Maincent
2023-03-02 17:38     ` Russell King (Oracle)
2023-03-02 21:35     ` Richard Cochran

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