Re: [Linuxptp-users] How to configure a grand master

[Richard C. <ric...@gm...>]

On Wed, Aug 01, 2018 at 04:00:02PM -0500, Keith Squier wrote:
> 1. How do I get the time from the GPS receiver to PTP?

Ideally you feed the 1 PPS from the GPS into your PHC.  Then write a
program that reads out the 1 PPS time stamps from the PHC and
disciplines the PHC to match the GPS time.

You can then optionally use phc2sys to synchronize the Linux system
time to the PHC.

Regarding TAI-UTC, the GPS does provide the information needed to
figure that offset.

HTH,
Richard