Gavin Lambert <gavinl@compacsort.com> [Tue, 14 Apr 2015 09:33:24 -0400] rev 2618
Ignore NXIO error otherwise this causes spam if network is empty or refclk not
selected yet, and syncing refclk time to master.
Gavin Lambert <gavinl@compacsort.com> [Sat, 31 May 2014 15:37:33 +1200] rev 2617
Do not force the DC reference clock to OP; if it is not configured it may refuse and flood the logs.