They're documented in the header but not in Documentation.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dave Jones <davej@redhat.com>
                                (in kHz) which is supported by 
                                this CPU
 policy->cpuinfo.transition_latency   the time it takes on this CPU to
-                               switch between two frequencies (if
-                               appropriate, else specify
-                               CPUFREQ_ETERNAL)
+                               switch between two frequencies in
+                               nanoseconds (if appropriate, else
+                               specify CPUFREQ_ETERNAL)
 
 policy->cur                    The current operating frequency of
                                this CPU (if appropriate)