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+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.

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