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refclock_phc: add nocrossts option

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Miroslav Lichvar
2017-01-19 16:28:49 +01:00
parent 50f99ec5f4
commit a60fc73e7b
2 changed files with 8 additions and 5 deletions
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7
doc/chrony.conf.adoc
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@@ -402,9 +402,10 @@ refclock SOCK /var/run/chrony.ttyS0.sock
*PHC*:::
PTP hardware clock (PHC) driver. The parameter is the path to the device of
the PTP clock, which for example can be synchronised by *ptp4l* from
http://linuxptp.sourceforge.net[*linuxptp*]. PTP clocks are typically kept in
TAI instead of UTC, so the *offset* option should be used to compensate for the
current UTC-TAI offset. For example:
http://linuxptp.sourceforge.net[*linuxptp*]. String *:nocrossts* can be
appended to the path to disable use of precise cross timestamping. PTP clocks
are typically kept in TAI instead of UTC, so the *offset* option should be used
to compensate for the current UTC-TAI offset. For example:
+
----
refclock PHC /dev/ptp0 poll 3 dpoll -2 offset -36