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[04/11] Documentation: PM: amd-pstate: introducing recommended reboot requirement during driver switch

Message ID cba2303c23bb579299f7c268b49286e62782893e.1715065568.git.perry.yuan@amd.com (mailing list archive)
State Superseded, archived
Headers show
Series AMD Pstate Driver Fixes and Improvements | expand

Commit Message

Yuan, Perry May 7, 2024, 7:15 a.m. UTC 
It is highly recommended to reboot the system when switching between the 'amd-pstate'
and 'acpi-cpufreq' drivers to avoid potential unexpected issues.
Rebooting will ensure that the system properly applies the changes and allows for a
seamless transition between the drivers.

Reported-by : Reported-by: Artem S. Tashkinov <aros@gmx.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=215801
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
---
 Documentation/admin-guide/pm/amd-pstate.rst | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst
index 1e0d101b020a..2695feec1baa 100644
--- a/Documentation/admin-guide/pm/amd-pstate.rst
+++ b/Documentation/admin-guide/pm/amd-pstate.rst
@@ -299,6 +299,10 @@  module which supports the new AMD P-States mechanism on most of the future AMD
 platforms. The AMD P-States mechanism is the more performance and energy
 efficiency frequency management method on AMD processors.
 
+When users attempt to switch from the acpi-cpufreq driver to the amd-pstate driver's working mode,
+it is recommended to reboot the system. This is to ensure that any low-level power management
+control states are properly switched to pstate control. By rebooting, the firmware can initialize
+with optimal power states, reducing the likelihood of unexpected issues.
 
 ``amd-pstate`` Driver Operation Modes
 ======================================