On Thu, Nov 19, 2020 at 04:45:40PM +0000, Suzuki K Poulose wrote:
Expose the TRCDEVARCH register via the sysfs for component detection. Given that the TRCIDR1 may not completely identify the ETM component and instead need to use TRCDEVARCH, expose this via sysfs for tools to use it for identification.
Cc: Mike Leach mike.leach@linaro.org Cc: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: Suzuki K Poulose suzuki.poulose@arm.com
drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 2 ++ 1 file changed, 2 insertions(+)
Reviewed-by: Mathieu Poirier mathieu.poirier@linaro.org
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 009818675928..277fd5bff811 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -2395,6 +2395,7 @@ coresight_etm4x_cross_read(trcidr10, TRCIDR10); coresight_etm4x_cross_read(trcidr11, TRCIDR11); coresight_etm4x_cross_read(trcidr12, TRCIDR12); coresight_etm4x_cross_read(trcidr13, TRCIDR13); +coresight_etm4x_cross_read(trcdevarch, TRCDEVARCH); static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr0.attr, @@ -2410,6 +2411,7 @@ static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr11.attr, &dev_attr_trcidr12.attr, &dev_attr_trcidr13.attr,
- &dev_attr_trcdevarch.attr, NULL,
}; -- 2.24.1