]> git.ipfire.org Git - thirdparty/linux.git/commit
drm/amd/pm: apply SMU 13.0.10 workaround during MP1 unload
authorYang Wang <kevinyang.wang@amd.com>
Thu, 21 May 2026 14:36:37 +0000 (22:36 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 3 Jun 2026 18:50:40 +0000 (14:50 -0400)
commit2493d87bb4c31ec9ca7f0ef7257e33b8b175f913
tree9cac2de119fdd9124e5cae605a58641bc5baf53c
parenta40412285ec17a69ed728675a56b7ad479c86e36
drm/amd/pm: apply SMU 13.0.10 workaround during MP1 unload

On SMU v13.0.10, sending PrepareMp1ForUnload with the default
parameter may leave the device in an inaccessible state. This can
affect runtime power management and partial PnP flows.
e.g: kexec, driver unload, boco/d3cold.

Pass the required workaround parameter 0x55, when preparing MP1 for
unload on SMU v13.0.10, keep the existing behavior for other SMU
versions.

Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5133
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4e8ee1afeedb8d24dd22cdd5ae9f98a6d76ebe4b)
Cc: stable@vger.kernel.org
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c