This is a note to let you know that I've just added the patch titled
drm/i915/dg1: Fix power gate sequence.
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-dg1-fix-power-gate-sequence.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e6a805aa31e387c2ce8e55d20e05b4f8a7ba42ad
Author: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Date: Thu Dec 19 16:00:19 2024 -0500
drm/i915/dg1: Fix power gate sequence.
[ Upstream commit 20e7c5313ffbf11c34a46395345677adbe890bee ]
sub-pipe PG is not present on DG1. Setting these bits can disable
other power gates and cause GPU hangs on video playbacks.
VLK: 16314, 4304
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13381
Fixes: 85a12d7eb8fe ("drm/i915/tgl: Fix Media power gate sequence.")
Cc: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@xxxxxxxxx>
Reviewed-by: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20241219210019.70532-1-rodrigo.vivi@xxxxxxxxx
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
(cherry picked from commit de7061947b4ed4be857d452c60d5fb795831d79e)
Signed-off-by: Tvrtko Ursulin <tursulin@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 799d382eea79..fbf1b0136aad 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -122,7 +122,7 @@ static void gen11_rc6_enable(struct intel_rc6 *rc6)
GEN9_MEDIA_PG_ENABLE |
GEN11_MEDIA_SAMPLER_PG_ENABLE;
- if (GRAPHICS_VER(gt->i915) >= 12) {
+ if (GRAPHICS_VER(gt->i915) >= 12 && !IS_DG1(gt->i915)) {
for (i = 0; i < I915_MAX_VCS; i++)
if (HAS_ENGINE(gt, _VCS(i)))
pg_enable |= (VDN_HCP_POWERGATE_ENABLE(i) |
