Hi Suzuki,
In addition to altering patch 18, to put the newly accessible
TRCDEVARCH register into the more appropriate 'mgmt' subdir for
CoreSight management registers, an update is needed to
./Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x to add a
reference for this new sysfs file to reflect the location and purpose
of the register.