Hello,
I am working on Linux 3.12 running on TI AM335x.
The Test system is GPS connected to CPU over Ethernet and GPS is configured
to End to End protocol.
following are the messages
--------------------------------------
ptp4l[71468.231]: master offset -230 s2 freq -23449 path delay
15359
ptp4l[71469.232]: master offset -185 s2 freq -23473 path delay
15372
ptp4l[71470.233]: master offset 90 s2 freq -23254 path delay
15503
ptp4l[71471.234]: master offset -321 s2 freq -23638 path delay
15500
ptp4l[71472.234]: master offset 152 s2 freq -23261 path delay
15500
ptp4l[71473.235]: master offset 279 s2 freq -23088 path delay
15500
ptp4l[71474.237]: master offset -343 s2 freq -23627 path delay
15500
ptp4l[71475.242]: master offset 77 s2 freq -23310 path delay
15500
ptp4l[71476.242]: master offset 51 s2 freq -23313 path delay
15500
ptp4l[71477.242]: master offset 29 s2 freq -23319 path delay
15500
-----------------------------------------
phc2sys[71501.627]: sys offset -75 s2 freq -23336 delay 3480
phc2sys[71502.628]: sys offset 37 s2 freq -23246 delay 3521
phc2sys[71503.629]: sys offset 229 s2 freq -23043 delay 3480
phc2sys[71504.630]: sys offset -3 s2 freq -23207 delay 3560
phc2sys[71505.631]: sys offset -203 s2 freq -23408 delay 3520
phc2sys[71506.631]: sys offset -340 s2 freq -23605 delay 3440
phc2sys[71507.632]: sys offset -233 s2 freq -23600 delay 3560
phc2sys[71508.633]: sys offset -8 s2 freq -23445 delay 3480
phc2sys[71509.634]: sys offset 234 s2 freq -23206 delay 3521
phc2sys[71510.634]: sys offset 235 s2 freq -23135 delay 3560
phc2sys[71511.635]: sys offset 162 s2 freq -23137 delay 3520
phc2sys[71512.636]: sys offset 37 s2 freq -23213 delay 3520
phc2sys[71513.637]: sys offset -252 s2 freq -23491 delay 3560
phc2sys[71514.638]: sys offset -89 s2 freq -23404 delay 3560
phc2sys[71515.639]: sys offset 269 s2 freq -23073 delay 3480
----------------------------------------------
I am trying to understand this messages.
how do I know whether system time is synced to GPS and what is accuracy ??
Regards,
Hardik A Gohil
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