doc/wrs-todo: adding the need of WR-RTC driver

3789e8b5 · Grzegorz Daniluk · Alessandro Rubini · 0b161dcf · 3789e8b5
Commit 3789e8b5 authored Oct 24, 2014 by Grzegorz Daniluk Committed by Alessandro Rubini Nov 28, 2014
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@@ -159,6 +159,16 @@ like increasing @t{NR_IRQ} and exporting symbols for externally-loaded
 the counters are. This would make the @sc{snmp} code generic, so
 no change there would be needed if and when the counters change.

+@item We need RTC driver to use WR time from FPGA as a system clock in Linux
+running on WR Switch (or to synchronize the system clock). Setting initial time
+from NTP is good for Grand Master in the network, but then we should keep all
+system clocks in sync with WR timescale. It will become important when people
+start gathering logs and SNMP info on a central server and would like to
+correlate logs if something bad happens. Let's keep in mind that currently
+unplugging fiber from the Slave port resets WR counters (i.e. current time
+00:00 01/01/1970). System clock should not follow this, we need to keep
+reporting failures timestamped with correct time.
+
 @end itemize

 @c ##########################################################################