doc: update description of NTP over PTP in FAQ

This commit is contained in:
Miroslav Lichvar 2023-11-22 09:51:14 +01:00
parent 82959431df
commit 5e5adbea0c

View file

@ -651,7 +651,10 @@ The `ethtool -T` command can be used to verify the timestamping support.
As an experimental feature added in version 4.2, `chrony` can use PTP as a
transport for NTP messages (NTP over PTP) to enable hardware timestamping on
hardware which can timestamp PTP packets only. It can be enabled by the
`ptpport` directive.
`ptpport` directive. Since version 4.5, `chrony` can also apply corrections
provided by PTP one-step end-to-end transparent clocks to reach the accuracy of
ordinary PTP clocks. The application of PTP corrections can be enabled by the
`extfield F324` option.
=== How can I avoid using wrong PHC refclock?