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-rw-r--r--Documentation/admin-guide/perf/imx-ddr.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/perf/imx-ddr.rst b/Documentation/admin-guide/perf/imx-ddr.rst
index 517a205abad6..66988b481217 100644
--- a/Documentation/admin-guide/perf/imx-ddr.rst
+++ b/Documentation/admin-guide/perf/imx-ddr.rst
@@ -50,3 +50,8 @@ in the driver.
axi_id to monitor a specific id, rather than having to specify axi_mask.
e.g.::
perf stat -a -e imx8_ddr0/axid-read,axi_id=0x12/ cmd, which will monitor ARID=0x12
+
+* With DDR_CAP_AXI_ID_FILTER_ENHANCED quirk.
+ This is an extension to the DDR_CAP_AXI_ID_FILTER quirk which permits
+ counting the number of bytes (as opposed to the number of bursts) from DDR
+ read and write transactions concurrently with another set of data counters.