https://docs.amd.com/r/en-US/ug1602-ptp-user/sfptpd-2-Stage-Synchronization
sfptpd 2-Stage Synchronization - sfptpd 2-Stage Synchronization - UG1602
The PTP messages are used by sfptpd to synchronize the adapter clock with the master clock. sfptpd runs a second clock servo to synchronize the system clock to...
stagesynchronization