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doc: update description of NTP over PTP in FAQ

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Miroslav Lichvar 2023-11-22 09:51:14 +01:00
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doc/faq.adoc
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@ -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 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 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 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? === How can I avoid using wrong PHC refclock?