From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Cochran <richardcochran@gmail.com>
Subject: Re: PTP_PEROUT_REQUEST and clock stepping
Date: Wed, 10 Sep 2014 19:26:20 +0200
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To: Daniel =?iso-8859-1?Q?Gl=F6ckner?= <dg@emlix.com>
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On Wed, Sep 10, 2014 at 06:16:37PM +0200, Daniel Gl=F6ckner wrote:
> Hi,
> I was wondering how periodic output is supposed to behave if the cloc=
k
> is stepped from a time after ptp_perout_request.start to a time befor=
e
> ptp_perout_request.start.

I would say the result is undefined.

User space should first stop the periodic output, then reprogram the
clock, then restart the periodic output. Anything else makes no sense
at all.

Thanks,
Richard