Messages in this thread | | | From | Vladimir Oltean <> | Date | Fri, 7 Jun 2019 12:43:05 +0300 | Subject | Re: [PATCH v3 net-next 00/17] PTP support for the SJA1105 DSA driver |
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On Fri, 7 Jun 2019 at 06:32, Richard Cochran <richardcochran@gmail.com> wrote: > > On Thu, Jun 06, 2019 at 04:40:19PM +0300, Vladimir Oltean wrote: > > Plain and simply because it doesn't work very well. > > Even phc2sys from the system clock to the hardware (no timestamps > > involved) has trouble staying put (under 1000 ns offset). > > And using the hardware-corrected timestamps triggers a lot of clockchecks. > > It sounds like a bug in reading or adjusting the HW clock. Is the HW > clock stable when you don't adjust its frequency?
How can I tell that for sure?
> > Thanks, > Richard
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