[PATCH 05/11] Documentation: PM: amd-pstate: add debugging section for driver loading failure

[Perry Yuan]

To address issues with the loading of the amd-pstate driver on certain platforms,
It needs to enable dynamic debugging to capture debug messages during the driver
loading process. By adding "amd_pstate.dyndbg=+p cppc_acpi.dyndbg=+p  loglevel=4 debug
amd_pstate=active" to the kernel command line, driver debug logging is enabled.

Signed-off-by: Perry Yuan <perry.yuan@xxxxxxx>
---
 Documentation/admin-guide/pm/amd-pstate.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
index 2695feec1baa..230e236796f7 100644
--- a/Documentation/admin-guide/pm/amd-pstate.rst
+++ b/Documentation/admin-guide/pm/amd-pstate.rst
@@ -476,6 +476,19 @@ operations for the new ``amd-pstate`` module with this tool. ::
 Diagnostics and Tuning
 =======================
 
+Debugging AMD P-State Driver Loading Issues
+------------------------------------------
+
+On some platforms, there may be issues with the loading of the amd-pstate driver.
+To capture debug messages for issue analysis, users can add below parameter,
+"amd_pstate.dyndbg=+p cppc_acpi.dyndbg=+p  loglevel=4 debug amd_pstate=active"
+to the kernel command line. This will enable dynamic debugging and allow better
+analysis and troubleshooting of the driver loading process.
+
+Please note that adding this parameter will only enable debug logging during the
+driver loading phase and may affect system behavior. Use this option with caution
+and only for debugging purposes.
+
 Trace Events
 --------------
 
-- 
2.34.1