root@lp-arm-5:~# ethtool -T eth0
Time stamping parameters for eth0:
Capabilities:
hardware-transmit
software-transmit
hardware-receive
software-receive
software-system-clock
hardware-raw-clock
Hardware timestamp provider index: 0
Hardware timestamp provider qualifier: Precise (IEEE 1588 quality)
Hardware Transmit Timestamp Modes:
off
on
onestep-sync
Hardware Receive Filter Modes:
none
all
root@lp-arm-5:~# phc_ctl /dev/ptp0 get
phc_ctl[644486.511]: clock time is 1787465854.590438111 or Sun Aug 23 11:47:34 2026
root@lp-arm-5:~# phc_ctl /dev/ptp0 caps
phc_ctl[644504.310]:
capabilities:
64000000 maximum frequency adjustment (ppb)
0 programable alarms
0 external time stamp channels
0 programmable periodic signals
0 configurable input/output pins
has pulse per second support
doesn't have cross timestamping support
doesn't have adjust phase support
root@lp-arm-5:~# date
sudo phc_ctl /dev/ptp0 get
sudo hwclock -r
Sun Aug 23 13:21:04 IST 2026
phc_ctl[645456.567]: clock time is 1787466824.601451911 or Sun Aug 23 12:03:44 2026
2026-08-23 13:21:04.580550+05:30
