perf/arm-cmn: Fix wp_dev_sel2 setting for multi-DTM configurations

Browse source

When MXP_MULTIPLE_DTM_EN is TRUE, each DTM will monitor at most
two device ports. In this case, {wp_dev_sel2, wp_dev_sel} will
only use values 2'b00 and 2'b01 per DTM.

Previously the setting allowed values beyond the supported range
per DTM, which could cause each DTM to select invalid ports when
MXP_MULTIPLE_DTM_EN is TRUE.

Fix this by only setting CMN_DTM_WPn_CONFIG_WP_DEV_SEL2 when
!multi_dtm.

Fixes: 60d1504070 ("perf/arm-cmn: Support new IP features")
Signed-off-by: Shouping Wang <allen.wang@hj-micro.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

...

This commit is contained in:

Shouping Wang 2026-09-10 19:46:01 +08:00 • committed by Will Deacon

parent 955d86e5f3

commit 49daa3d668

1 changed files with 7 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

10

drivers/perf/arm-cmn.c

View file