From: Richard Cochran <richardcochran@gmail.com>
To: "Sørensen, Stefan" <Stefan.Sorensen@spectralink.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: PTP: PHY timestamping when MAC is PTP capable
Date: Mon, 28 Aug 2017 05:33:31 -0700 [thread overview]
Message-ID: <20170828123331.sv52oawme6hfpdy2@localhost> (raw)
In-Reply-To: <1503909582.2455.2.camel@spectralink.com>
On Mon, Aug 28, 2017 at 08:39:44AM +0000, Sørensen, Stefan wrote:
> I have run into a problem with packet timestamping on a platform (cpsw
> + dp83640) where both the PHY and the MAC is PTP capable and I need
> the PHY to perform the timestamping. In the current code,
> SIOCGHWTSTAMP is passed to the MAC driver and only if it does not
> support PTP itself will it pass it on to the PHY driver.
>
> I see two ways to fix this:
Just disable CONFIG_CPTS and patch cpsw.c to pass SIOC[GS]HWTSTAMP.
I don't see any reasonable way to make this sort of thing configurable
at run time.
Thanks,
Richard
prev parent reply other threads:[~2017-08-28 12:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-28 8:39 PTP: PHY timestamping when MAC is PTP capable Sørensen, Stefan
2017-08-28 12:33 ` Richard Cochran [this message]
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