What:		/sys/bus/coresight/devices/<memory_map>.tmc/trigger_cntr
Date:		November 2014
KernelVersion:	3.19
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Disables write access to the Trace RAM by stopping the
		formatter after a defined number of words have been stored
		following the trigger event. Additional interface for this
		driver are expected to be added as it matures.