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This refclock uses an RTC as reference source. If the RTC doesn't support reporting an update event this source is quite coarse as it usually needs a slow bus access to be read and has a precision of only one second. If reporting an update event is available, the time is read just after such an event which improves precision. Depending on hardware capabilities you might want to combine it with a PPS reference clock sourced from the same chip. Note that you can enable UIE emulation in the Linux kernel to make a RTC without interrupt support look like one with irqs in return for some system and bus overhead. Co-authored-by: Ahmad Fatoum <a.fatoum@pengutronix.de> |
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| .. | ||
| chrony.conf.adoc | ||
| chronyc.adoc | ||
| chronyd.adoc | ||
| contributing.adoc | ||
| faq.adoc | ||
| installation.adoc | ||
| Makefile.in | ||