[ntp:hackers] u-blox reference clock driver

[Achim Gratz]

MLewis via devel writes:
> Exactly! It's been on my todo list for a couple of years, but I wasn't
> motivated to get into a LKM to get to kernel space to make it
> worthwhile. Although I suspected that even from user space, the result
> would be better than some PPS.

Well, it sure avoids the interrupt jitter.

>> You can actually drop the PPS in this case, as it will provide no benefit.
> Agreed. Except possible benefit with alignment, as described above.

You don't need any alignment either way (for NTP that is), just
reasonably equal-spaced pulses to correlate system w/ GPS time.  It's
not even a problem if once in a while a pulse was missing, as long as
you know which one that was.


Regards,
Achim.
-- 
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