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 <[email protected]> > Cc: Mathieu Poirier <[email protected]> > Signed-off-by: Suzuki K Poulose <[email protected]> > --- > drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 2 ++ > 1 file changed, 2 insertions(+)
Reviewed-by: Mathieu Poirier <[email protected]> > > 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 >
