This is a note to let you know that I've just added the patch titled
drm/amd/display: Correct logic check error for fastboot
to the 6.12-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-amd-display-correct-logic-check-error-for-fastboot.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Wed Apr 1 02:45:51
>2026
From: Rosen Penev <[email protected]>
Date: Tue, 31 Mar 2026 17:39:08 -0700
Subject: drm/amd/display: Correct logic check error for fastboot
To: [email protected]
Cc: "Alex Deucher" <[email protected]>, "Christian König"
<[email protected]>, "Xinhui Pan" <[email protected]>, "David Airlie"
<[email protected]>, "Simona Vetter" <[email protected]>, "Harry Wentland"
<[email protected]>, "Leo Li" <[email protected]>, "Rodrigo Siqueira"
<[email protected]>, "Ray Wu" <[email protected]>, "Wayne Lin"
<[email protected]>, "Mario Limonciello" <[email protected]>, "Roman
Li" <[email protected]>, "Eric Yang" <[email protected]>, "Tony Cheng"
<[email protected]>, "Mauro Rossi" <[email protected]>, "Timur Kristóf"
<[email protected]>, "Alex Hung" <[email protected]>,
[email protected] (open list:RADEON and AMDGPU DRM DRIVERS),
[email protected] (open list:DRM DRIVERS),
[email protected] (open list)
Message-ID: <[email protected]>
From: Charlene Liu <[email protected]>
[ Upstream commit b6a65009e7ce3f0cc72da18f186adb60717b51a0 ]
[Why]
Fix fastboot broken in driver.
This is caused by an open source backport change 7495962c.
from the comment, the intended check is to disable fastboot
for pre-DCN10. but the logic check is reversed, and causes
fastboot to be disabled on all DCN10 and after.
fastboot is for driver trying to pick up bios used hw setting
and bypass reprogramming the hw if dc_validate_boot_timing()
condition meets.
Fixes: 7495962cbceb ("drm/amd/display: Disable fastboot on DCE 6 too")
Cc: [email protected]
Reviewed-by: Mario Limonciello <[email protected]>
Reviewed-by: Ovidiu Bunea <[email protected]>
Signed-off-by: Charlene Liu <[email protected]>
Signed-off-by: Ray Wu <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Rosen Penev <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
@@ -1910,8 +1910,8 @@ void dce110_enable_accelerated_mode(stru
get_edp_streams(context, edp_streams, &edp_stream_num);
- /* Check fastboot support, disable on DCE 6-8 because of blank screens
*/
- if (edp_num && edp_stream_num && dc->ctx->dce_version <
DCE_VERSION_10_0) {
+ /* Check fastboot support, disable on DCE 6-8-10 because of blank
screens */
+ if (edp_num && edp_stream_num && dc->ctx->dce_version >
DCE_VERSION_10_0) {
for (i = 0; i < edp_num; i++) {
edp_link = edp_links[i];
if (edp_link != edp_streams[0]->link)
Patches currently in stable-queue which might be from [email protected] are
queue-6.12/drm-amd-amdgpu-decouple-aspm-with-pcie-dpm.patch
queue-6.12/drm-amd-display-reject-modes-with-too-high-pixel-clock-on-dce6-10.patch
queue-6.12/drm-amd-display-fix-dce-6.0-and-6.4-pll-programming.patch
queue-6.12/drm-amd-display-disable-scaling-on-dce6-for-now.patch
queue-6.12/drm-amd-display-disable-fastboot-on-dce-6-too.patch
queue-6.12/drm-amd-display-correct-logic-check-error-for-fastboot.patch
queue-6.12/drm-amd-amdgpu-disable-aspm-in-some-situations.patch
queue-6.12/drm-amd-display-keep-pll0-running-on-dce-6.0-and-6.4.patch
queue-6.12/drm-amd-display-adjust-dce-8-10-clock-don-t-overclock-by-15.patch
queue-6.12/drm-amd-disable-aspm-on-si.patch
