On Fri, Dec 04, 2020 at 03:02:58AM +0200, Vladimir Oltean wrote:
> On Thu, Dec 03, 2020 at 04:34:46PM -0800, Richard Cochran wrote:
> > > Actually, for dpaa2, the one-step timestamping procedure just does:
> > >
> > > correctionField += t_TX - t_passed_inband
> > >
> > > where the driver populates:
> > > t_passed_inband = originTimestamp = approximate PTP time of software 
> > > packet delivery
> >
> > ptp4l sets to originTimestamp zero!
> 
> And the driver happily overwrites it, I don't understand what the issue
> is. If not the driver, the MAC would, anyway.

huh?

Doesn't it looks strang if the originTimestamp arrives at the client
with zero.

Or maybe I didn't understand what the dpaa2 driver/HW does?

Does the driver populate the originTimestamp?


Thanks,
Richard


_______________________________________________
Linuxptp-devel mailing list
Linuxptp-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linuxptp-devel

Reply via email to