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drm/i915/edp: Increase T12 panel delay to 900 ms to fix DP AUX CH timeouts 

This patch fixes the DP AUX CH timeouts observed during CI runs causing
CI Failures on a specific PCI device. This issue was fixed previously
by adding a quirk but looks like we need to increase this delay even more
in order to get rid all the DP AUX CH timeouts.

Fixes: c99a259b4b ("drm/i915/edp: Add a T12 panel delay quirk to fix
DP AUX CH timeouts")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101144
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Clinton Taylor <clinton.a.taylor@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Tomi Sarvela <tomi.p.sarvela@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502823591-25310-1-git-send-email-manasi.d.navare@intel.com
(cherry picked from commit e8f345e08d)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Manasi Navare 2017-08-15 11:59:51 -07:00 committed by Rodrigo Vivi
parent fa3722f649
commit 5b2eff5916
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_dp.c
View File

@ -5273,7 +5273,7 @@ intel_dp_init_panel_power_sequencer(struct drm_device *dev,
* seems sufficient to avoid this problem.
*/
if (dev_priv->quirks & QUIRK_INCREASE_T12_DELAY) {
vbt.t11_t12 = max_t(u16, vbt.t11_t12, 800 * 10);
vbt.t11_t12 = max_t(u16, vbt.t11_t12, 900 * 10);
DRM_DEBUG_KMS("Increasing T12 panel delay as per the quirk to %d\n",
vbt.t11_t12);
}