This is a note to let you know that I've just added the patch titled
drm/amd/display: Remove power sequencing check
to the 6.6-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-remove-power-sequencing-check.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 41199b15c86a73d96376494ef9ec210907373a5b
Author: Agustin Gutierrez <agustin.gutierrez@xxxxxxx>
Date: Mon Oct 2 10:21:08 2023 -0400
drm/amd/display: Remove power sequencing check
[ Upstream commit b0399e22ada096435de3e3e73899aa8bc026820d ]
[Why]
Some ASICs keep backlight powered on after dpms off
command has been issued.
[How]
The check for no edp power sequencing was never going to pass.
The value is never changed from what it is set by design.
Cc: stable@xxxxxxxxxxxxxxx # 6.1+
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2765
Reviewed-by: Swapnil Patel <swapnil.patel@xxxxxxx>
Acked-by: Roman Li <roman.li@xxxxxxx>
Signed-off-by: Agustin Gutierrez <agustin.gutierrez@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
index 28cb1f5a504d1..a17a06eb7762b 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
@@ -1930,8 +1930,7 @@ static void disable_link_dp(struct dc_link *link,
dp_disable_link_phy(link, link_res, signal);
if (link->connector_signal == SIGNAL_TYPE_EDP) {
- if (!link->dc->config.edp_no_power_sequencing &&
- !link->skip_implict_edp_power_control)
+ if (!link->skip_implict_edp_power_control)
link->dc->hwss.edp_power_control(link, false);
}
