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 4.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summ...
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-4.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From bdcc02cf1bb508fc700df7662f55058f651f2621 Mon Sep 17 00:00:00 2001
From: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com Date: Fri, 11 May 2018 12:51:42 -0700 Subject: drm/psr: Fix missed entry in PSR setup time table. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
From: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com
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@vger.kernel.org Cc: Ville Syrjälä ville.syrjala@linux.intel.com Cc: Jose Roberto de Souza jose.souza@intel.com Cc: dri-devel@lists.freedesktop.org Reviewed-by: José Roberto de Souza jose.souza@intel.com Reviewed-by: Tarun Vyas tarun.vyas@intel.com Signed-off-by: Dhinakaran Pandiyan dhinakaran.pandiyan@intel.com Signed-off-by: Jani Nikula jani.nikula@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20180511195145.3829-3-dhinakar... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -1141,6 +1141,7 @@ 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@intel.com are
queue-4.16/drm-psr-fix-missed-entry-in-psr-setup-time-table.patch