From: Richard Cochran <richardcochran@gmail.com>
To: "Köry Maincent" <kory.maincent@bootlin.com>
Cc: Jakub Kicinski <kuba@kernel.org>,
"Russell King (Oracle)" <linux@armlinux.org.uk>,
andrew@lunn.ch, davem@davemloft.net, f.fainelli@gmail.com,
hkallweit1@gmail.com, netdev@vger.kernel.org,
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: Wed, 1 Mar 2023 20:36:37 -0800 [thread overview]
Message-ID: <ZAAn1deCtR0BoVAm@hoboy.vegasvil.org> (raw)
In-Reply-To: <20230301170408.0cc0519d@kmaincent-XPS-13-7390>
On Wed, Mar 01, 2023 at 05:04:08PM +0100, Köry Maincent wrote:
> I suppose the idea of Russell to rate each PTP clocks may be the best one, as
> all others solutions have drawbacks. Does using the PTP clock period value (in
> picoseconds) is enough to decide which PTP is the best one? It is hardware
> specific therefore it is legitimate to be set by the MAC and PHY drivers.
It is not that simple. In fact, I've never seen an objective
comparision of different HW. The vendors surely have no reason to
conduct such a study. Also, the data sheets never make any claim
about synchronization quality.
Thanks,
Richard
next prev parent reply other threads:[~2023-03-02 4:36 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 [this message]
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
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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