> -----Original Message-----
> From: Richard Cochran <richardcoch...@gmail.com>
> Sent: Thursday, May 20, 2021 8:28 AM
> To: Joseph Matan <joseph.matan...@gmail.com>
> Cc: linuxptp-users@lists.sourceforge.net
> Subject: Re: [Linuxptp-users] Getting big offsets with phc2sys
> 
> On Wed, May 19, 2021 at 10:31:00PM +0300, Joseph Matan wrote:
> > *Platform:*
> >
> > My board is running with KSZ9477 switch (with HW timestamping support) on
> > linux 4.19.
> 
> I guess that the time is read over MDIO.  If so, that explains the
> jitter in the measured offsets.
> 
> HTH,
> Richard
> 
> 

I would double check that you've implemented the newest .gettimex function call 
for reading time as well in your driver.

Thanks,
Jake


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