This is a note to let you know that I've just added the patch titled
Revert "drm/amd/display: edp do not add non-edid timings"
to the 6.4-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:
revert-drm-amd-display-edp-do-not-add-non-edid-timings.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d6149086b45e150c170beaa4546495fd1880724c Mon Sep 17 00:00:00 2001
From: Hersen Wu <hersenxs.wu@xxxxxxx>
Date: Mon, 26 Jun 2023 13:40:58 -0400
Subject: Revert "drm/amd/display: edp do not add non-edid timings"
From: Hersen Wu <hersenxs.wu@xxxxxxx>
commit d6149086b45e150c170beaa4546495fd1880724c upstream.
This change causes regression when eDP and external display in mirror
mode. When external display supports low resolution than eDP, use eDP
timing to driver external display may cause corruption on external
display.
This reverts commit e749dd10e5f292061ad63d2b030194bf7d7d452c.
Cc: stable@xxxxxxxxxxxxxxx
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2655
Signed-off-by: Hersen Wu <hersenxs.wu@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7137,13 +7137,7 @@ static int amdgpu_dm_connector_get_modes
drm_add_modes_noedid(connector, 1920, 1080);
} else {
amdgpu_dm_connector_ddc_get_modes(connector, edid);
- /* most eDP supports only timings from its edid,
- * usually only detailed timings are available
- * from eDP edid. timings which are not from edid
- * may damage eDP
- */
- if (connector->connector_type != DRM_MODE_CONNECTOR_eDP)
- amdgpu_dm_connector_add_common_modes(encoder, connector);
+ amdgpu_dm_connector_add_common_modes(encoder, connector);
amdgpu_dm_connector_add_freesync_modes(connector, edid);
}
amdgpu_dm_fbc_init(connector);
Patches currently in stable-queue which might be from hersenxs.wu@xxxxxxx are
queue-6.4/revert-drm-amd-display-edp-do-not-add-non-edid-timings.patch
