Linux OS and PPS

Hello,

I want my Linux Kernel/Controller to be precision time synched to a 1 PPS. I know with the NI-Sync API and the 6674T timing card, I can send a 1 PPS signal to the controller via a trigger.

Is there any way via chrony for it to take that signal and sync to it? Im trying to get high fidelity accuracy on my Linux Controller. I see in chrony you can specify a PPS in its /etc/chrony.conf, but I'm not sure what its path is.

Any help would be appreciated.