[PATCH 6/6] doc: TPMI: Add entry for Performance Limit Reasons

[Tero Kristo <tero.kristo@linux.intel.com>]

Describe the new 'plr' (Performance Limit Reasons) directory contents under
the main TPMI debugfs folder.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
---
 Documentation/ABI/testing/debugfs-tpmi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/ABI/testing/debugfs-tpmi b/Documentation/ABI/testing/debugfs-tpmi
index 597f0475fe6e..4daa9ecd7918 100644
--- a/Documentation/ABI/testing/debugfs-tpmi
+++ b/Documentation/ABI/testing/debugfs-tpmi
@@ -29,3 +29,12 @@ Example:
 echo 0,0x20,0xff > mem_write
 echo 1,64,64 > mem_write
 Users:		Debugging, any user space test suite
+
+What:		/sys/kernel/debug/tpmi-<n>/plr/domain<n>/status
+Date:		Aug 2024
+KernelVersion:	6.11
+Contact:	Tero Kristo <tero.kristo@linux.intel.com>
+Description:
+Shows the currently active Performance Limit Reasons for die level and the
+individual CPUs under the die. The contents of this file are sticky, and
+clearing all the statuses can be done by writing "0\n" to this file.
-- 
2.43.1