From 5b2eff59160e017c6091ecda1ee2c84f8c914143 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Tue, 15 Aug 2017 11:59:51 -0700 Subject: [PATCH] drm/i915/edp: Increase T12 panel delay to 900 ms to fix DP AUX CH timeouts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: c99a259b4b5192ba ("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 Cc: Clinton Taylor Cc: Daniel Vetter Cc: Tomi Sarvela Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/1502823591-25310-1-git-send-email-manasi.d.navare@intel.com (cherry picked from commit e8f345e08d391827f2cba5d172af990cc7afb062) Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 4fd4853b2250..64134947c0aa 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -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); }