From: richardcochran@gmail.com (Richard Cochran)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH net-next v3 1/2] macb: Add 1588 support in Cadence GEM.
Date: Fri, 9 Dec 2016 09:57:52 +0100 [thread overview]
Message-ID: <20161209085752.GB16009@localhost.localdomain> (raw)
In-Reply-To: <CAFcVECJutEu2=POtAU=jX6E3-ZHsLXpOMMw+UJ0hcQgZ0n4ZVA@mail.gmail.com>
On Fri, Dec 09, 2016 at 11:07:23AM +0530, Harini Katakam wrote:
> I'm afraid I don't get why we are choosing the most limited max adj..
> Sorry if I'm missing something - could you please help me understand?
This max_adj is only important when the local clock offset is large
and user space chooses not to step the time value. In that case, user
space will want to run the clock as fast (or as slow) as possible in
order to catch up with the remote clock.
The driver must provide a max_adj that is always safe for user space
to apply via the clock_adjtime() system call.
HTH,
Richard
next prev parent reply other threads:[~2016-12-09 8:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-07 18:21 [RFC PATCH net-next v3 1/2] macb: Add 1588 support in Cadence GEM Andrei Pistirica
2016-12-07 18:21 ` [RFC PATCH net-next v3 2/2] macb: Enable 1588 support in SAMA5Dx platforms Andrei Pistirica
2016-12-07 19:43 ` Richard Cochran
2016-12-07 19:39 ` [RFC PATCH net-next v3 1/2] macb: Add 1588 support in Cadence GEM Richard Cochran
2016-12-07 21:04 ` Richard Cochran
2016-12-08 14:41 ` Andrei.Pistirica at microchip.com
2016-12-09 5:37 ` Harini Katakam
2016-12-09 8:57 ` Richard Cochran [this message]
2016-12-09 9:20 ` Rafal Ozieblo
2016-12-12 10:22 ` Andrei.Pistirica at microchip.com
2016-12-12 10:34 ` Harini Katakam
2016-12-12 21:09 ` Richard Cochran
2016-12-08 9:59 ` Nicolas Ferre
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