From: Andrew Lunn <andrew@lunn.ch>
To: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Ivan Vecera <ivecera@redhat.com>, Jiri Pirko <jiri@resnulli.us>,
netdev@vger.kernel.org, ivan.khoronzhuk@linaro.org,
nsekhar@ti.com, francois.ozog@linaro.org, yogeshs@ti.com,
spatton@ti.com
Subject: Re: [PATCH 0/4] RFC CPSW switchdev mode
Date: Tue, 5 Jun 2018 23:28:40 +0200 [thread overview]
Message-ID: <20180605212840.GA3796@lunn.ch> (raw)
In-Reply-To: <327df2cb-a0ad-c272-9b03-066d16ac14b6@ti.com>
> I hope you are right - question is always in number of available options
> and which one to select - and, most important, explain it to the end user :(
The end customer being ptp4linux? At least for Marvell switches, it is
happy about everything except that the switch is a bit slow, so we
need to modify some of the time outs in the configuration file.
> For example:
> phc_index is returned as part of .get_ts_info() = cpsw_get_ts_info(),
> so which intf should return phc_index?
It is not a 1:1 relationship. See:
https://elixir.bootlin.com/linux/latest/source/drivers/net/dsa/mv88e6xxx/hwtstamp.c#L61
All interfaces return the same index.
In fact, for a switch, having a PHC per port would be odd. That would
mean you need to sync the PHCs in order to act as a boundary clock.
Andrew
next prev parent reply other threads:[~2018-06-05 21:28 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-24 6:56 [PATCH 0/4] RFC CPSW switchdev mode Ilias Apalodimas
2018-05-24 6:56 ` [PATCH 1/4] cpsw: move common headers definitions to cpsw_priv.h Ilias Apalodimas
2018-05-24 6:56 ` [PATCH 2/4] cpsw_ale: add support functions for switchdev Ilias Apalodimas
2018-05-24 6:56 ` [PATCH 3/4] cpsw_switchdev: add switchdev support files Ilias Apalodimas
2018-05-24 10:00 ` Maxim Uvarov
2018-05-27 4:39 ` kbuild test robot
2018-05-24 6:56 ` [PATCH 4/4] cpsw: add switchdev support Ilias Apalodimas
2018-05-24 13:12 ` Andrew Lunn
2018-05-24 13:32 ` Ilias Apalodimas
2018-05-24 16:39 ` Andrew Lunn
2018-05-25 4:56 ` Ilias Apalodimas
2018-06-01 21:48 ` Florian Fainelli
2018-06-02 10:34 ` Ilias Apalodimas
2018-06-02 16:10 ` Florian Fainelli
2018-06-02 16:52 ` Ilias Apalodimas
2018-06-05 21:03 ` Grygorii Strashko
2018-06-05 21:37 ` Florian Fainelli
2018-05-24 8:05 ` [PATCH 0/4] RFC CPSW switchdev mode Jiri Pirko
2018-05-24 8:48 ` Ilias Apalodimas
2018-05-24 12:54 ` Andrew Lunn
2018-05-24 13:44 ` Ivan Vecera
2018-05-24 14:08 ` Ilias Apalodimas
2018-05-24 14:54 ` Andrew Lunn
2018-05-24 15:07 ` Ilias Apalodimas
2018-05-24 15:25 ` Andrew Lunn
2018-05-24 16:02 ` Ilias Apalodimas
2018-05-24 16:33 ` Andrew Lunn
2018-05-25 6:29 ` Ilias Apalodimas
2018-05-25 10:28 ` Ilias Apalodimas
2018-05-25 11:59 ` Andrew Lunn
2018-05-25 12:09 ` Andrew Lunn
2018-05-31 15:27 ` Ilias Apalodimas
2018-06-02 23:28 ` Grygorii Strashko
2018-06-03 0:08 ` Andrew Lunn
2018-06-05 21:18 ` Grygorii Strashko
2018-06-05 21:28 ` Andrew Lunn [this message]
2018-06-05 21:42 ` Grygorii Strashko
2018-06-05 21:55 ` Andrew Lunn
2018-06-03 0:26 ` Andrew Lunn
2018-06-05 23:23 ` Grygorii Strashko
2018-06-05 23:49 ` Andrew Lunn
2018-06-06 8:23 ` Ivan Khoronzhuk
2018-06-03 0:37 ` Andrew Lunn
2018-06-05 21:31 ` Grygorii Strashko
2018-06-05 21:37 ` Andrew Lunn
2018-06-03 0:49 ` Andrew Lunn
2018-06-05 22:45 ` Grygorii Strashko
2018-06-05 23:40 ` Andrew Lunn
2018-06-01 21:29 ` Grygorii Strashko
2018-06-02 14:08 ` Andrew Lunn
2018-06-05 22:59 ` Grygorii Strashko
2018-06-05 23:53 ` Andrew Lunn
2018-06-06 6:42 ` Ilias Apalodimas
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