This is a note to let you know that I've just added the patch titled
drm/psr: Fix missed entry in PSR setup time table.
to the 4.9-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-psr-fix-missed-entry-in-psr-setup-time-table.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bdcc02cf1bb508fc700df7662f55058f651f2621 Mon Sep 17 00:00:00 2001
From: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Date: Fri, 11 May 2018 12:51:42 -0700
Subject: drm/psr: Fix missed entry in PSR setup time table.
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From: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
commit bdcc02cf1bb508fc700df7662f55058f651f2621 upstream.
Entry corresponding to 220 us setup time was missing. I am not aware of
any specific bug this fixes, but this could potentially result in enabling
PSR on a panel with a higher setup time requirement than supported by the
hardware.
I verified the value is present in eDP spec versions 1.3, 1.4 and 1.4a.
Fixes: 6608804b3d7f ("drm/dp: Add drm_dp_psr_setup_time()")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Jose Roberto de Souza <jose.souza@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Reviewed-by: Tarun Vyas <tarun.vyas@xxxxxxxxx>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20180511195145.3829-3-dhinakaran.pandiyan@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_dp_helper.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1065,6 +1065,7 @@ int drm_dp_psr_setup_time(const u8 psr_c
static const u16 psr_setup_time_us[] = {
PSR_SETUP_TIME(330),
PSR_SETUP_TIME(275),
+ PSR_SETUP_TIME(220),
PSR_SETUP_TIME(165),
PSR_SETUP_TIME(110),
PSR_SETUP_TIME(55),
Patches currently in stable-queue which might be from dhinakaran.pandiyan@xxxxxxxxx are
queue-4.9/drm-psr-fix-missed-entry-in-psr-setup-time-table.patch
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