K 10
svn:author
V 8
jhibbits
K 8
svn:date
V 27
2017-04-01T22:29:11.135665Z
K 7
svn:log
V 303
Add a helper function to get system reference clock

Many devices are clocked from the SoC's platform clock / 2.  Some device nodes
include their own clock-frequency property, while others are dependent on the
SoC's bus-frequency property instead.  To simplify, add a helper function to get
this clock.

END