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+/- 0
Apr 07 17:23:16 OpenIL ptp4l[3778]: [68486.669] rms 14 max 28 freq +1643 +/- 13 delay 737
+/- 0
Apr 07 17:23:17 OpenIL ptp4l[3778]: [68487.670] rms 11 max 17 freq +1650 +/- 10 delay 738
+/- 0
Apr 07 17:23:18 OpenIL ptp4l[3778]: [68488.671] rms 11 max 20 freq +1633 +/- 15 delay 738
+/- 0
Apr 07 17:23:19 OpenIL ptp4l[3778]: [68489.672] rms 8 max 16 freq +1640 +/- 11 delay 737
+/- 0
Apr 07 17:23:20 OpenIL ptp4l[3778]: [68490.673] rms 16 max 32 freq +1640 +/- 23 delay 737
+/- 0
Apr 07 17:23:21 OpenIL ptp4l[3778]: [68491.674] rms 12 max 21 freq +1622 +/- 13 delay 737
+/- 0
Apr 07 17:23:22 OpenIL ptp4l[3778]: [68492.675] rms 13 max 19 freq +1648 +/- 13 delay 738
+/- 0
Apr 07 17:23:23 OpenIL ptp4l[3778]: [68493.676] rms 18 max 34 freq +1668 +/- 15 delay 737
+/- 0
• phc2sys:
Apr 07 17:23:38 OpenIL phc2sys[3774]: [68508.790] CLOCK_REALTIME phc offset 10 s2 freq
-342 delay 1600
Apr 07 17:23:39 OpenIL phc2sys[3774]: [68509.791] CLOCK_REALTIME phc offset 2 s2 freq
-347 delay 1560
Apr 07 17:23:40 OpenIL phc2sys[3774]: [68510.791] CLOCK_REALTIME phc offset 9 s2 freq
-339 delay 1600
Apr 07 17:23:41 OpenIL phc2sys[3774]: [68511.791] CLOCK_REALTIME phc offset -22 s2 freq
-368 delay 1560
Apr 07 17:23:42 OpenIL phc2sys[3774]: [68512.791] CLOCK_REALTIME phc offset -19 s2 freq
-371 delay 1560
Apr 07 17:23:43 OpenIL phc2sys[3774]: [68513.791] CLOCK_REALTIME phc offset -13 s2 freq
-371 delay 1560
Apr 07 17:23:44 OpenIL phc2sys[3774]: [68514.791] CLOCK_REALTIME phc offset 48 s2 freq
-314 delay 1560
Apr 07 17:23:45 OpenIL phc2sys[3774]: [68515.792] CLOCK_REALTIME phc offset 22 s2 freq
-325 delay 1560
Apr 07 17:23:46 OpenIL phc2sys[3774]: [68516.792] CLOCK_REALTIME phc offset 17 s2 freq
-324 delay 1560
Apr 07 17:23:47 OpenIL phc2sys[3774]: [68517.792] CLOCK_REALTIME phc offset -29 s2 freq
-365 delay 1560
The role of the LS1021A-TSN board is to relay the PTP time from the 802.1AS grandmaster to the slave. It acts as a slave on
the port connected to the GM and as a master on the port connected to the other host.
[root@OpenIL ~] # journalctl -b -u ptp4l -f
-- Logs begin at Tue 2020-04-07 14:02:11 UTC. --
Apr 07 17:24:34 OpenIL ptp4l[291]: [86640.528] rms 10 max 23 freq -19731 +/- 11 delay 737 +/- 0
Apr 07 17:24:35 OpenIL ptp4l[291]: [86641.528] rms 9 max 15 freq -19740 +/- 13 delay 736 +/- 0
Apr 07 17:24:36 OpenIL ptp4l[291]: [86642.529] rms 12 max 19 freq -19757 +/- 10 delay 737 +/- 0
Apr 07 17:24:37 OpenIL ptp4l[291]: [86643.530] rms 9 max 14 freq -19747 +/- 13 delay 737 +/- 0
Apr 07 17:24:38 OpenIL ptp4l[291]: [86644.530] rms 13 max 22 freq -19733 +/- 15 delay 736 +/- 0
Apr 07 17:24:39 OpenIL ptp4l[291]: [86645.531] rms 7 max 14 freq -19735 +/- 9 delay 737 +/- 0
Apr 07 17:24:40 OpenIL ptp4l[291]: [86646.532] rms 7 max 13 freq -19735 +/- 9 delay 737 +/- 0
Apr 07 17:24:41 OpenIL ptp4l[291]: [86647.532] rms 11 max 19 freq -19750 +/- 12 delay 737 +/- 0
Apr 07 17:24:42 OpenIL ptp4l[291]: [86648.533] rms 6 max 14 freq -19745 +/- 8 delay 737 +/- 0
Apr 07 17:24:43 OpenIL ptp4l[291]: [86649.534] rms 9 max 15 freq -19750 +/- 12 delay 736
+/- 0
The above information can be interpreted as follows (only the last line is interpreted here):
NXP Semiconductors
TSN
Open Industrial User Guide, Rev. 1.8, 05/2020
User's Guide
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