TRCIDR4          2129 drivers/hwtracing/coresight/coresight-etm4x-sysfs.c coresight_etm4x_cross_read(trcidr4, TRCIDR4);
TRCIDR4           687 drivers/hwtracing/coresight/coresight-etm4x.c 	etmidr4 = readl_relaxed(drvdata->base + TRCIDR4);