[time-nuts] Designing an embedded precision GPS time server

Bob kb8tq kb8tq at n1k.org
Thu Oct 26 22:06:01 EDT 2017


Hi

I suspect that once you find a group of chips that do have 1588 embedded in them that
digging into all the nasty details will take a bit. Time stamping to a 1 ms resolution might
not be a very helpful thing ….. There are ex-Freescale / now NXP devices that do have
pretty good 1588 in them. I’m sure they are not the only ones to go down that route.

Bob


> On Oct 26, 2017, at 8:38 PM, Denny Page <denny at cococafe.com> wrote:
> 
> If you are going to do PTP with ptp4l, or NTP with Chrony, you are going to want hardware timestamping support on the ethernet phy. I would view this as one of the principal concerns in choosing a system.
> 
> I’m not sufficiently familiar with Beagles… do any of them support hardware timestamping?
> 
> Denny
> 
> 
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