we want use a counter to do timekeeping. The requirement is as below:
1.The accuracy is ns.
2.It can be set to 0 and then count from 0 auto.
3.I can read and reset it from the userspace
Maybe googling would get helpful information.
Can the TSC be used for ?
We don’t want to sync the system time during the time-sync. So we want a hardware counter to save the UTC time which read from the GPRMC and count the ns from 0 when PPS is received.
Can you give me any suggestions about hardware count?
Maybe reference to below topic.
It have no relations with my problem.
I want a hardware count for the UTC time, and it doesn’t modify the linux system time during the time-sync.
From the Orin-TRM_DP10508002v1.1p.pdf, I can see the TSC and second TSC. So whether these counts can be used? If yes, how to enable and use them?
OK, I don’t have much idea for it.
Maybe check the TRM if any function match your request.
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