| From | Ben Hutchings <> | Date | Sun, 08 Sep 2013 03:52:01 +0100 | Subject | [108/121] drm/i915: ivb: fix edp voltage swing reg val |
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3.2.51-rc1 review patch. If anyone has any objections, please let me know.
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From: Imre Deak <imre.deak@intel.com>
commit 77fa4cbd5fa389e28419bbe8ac491b5fdd54840d upstream.
Fix the typo introduced in
commit 1a2eb4604b85c5efb343da8a4dcf41288fcfca85 Author: Keith Packard <keithp@keithp.com> Date: Wed Nov 16 16:26:07 2011 -0800
drm/i915: Hook up Ivybridge eDP
This fixes eDP link-training failures and cases where all voltage swing /pre-emphasis levels were tried and failed during clock recovery and - as a fallback - we go on to do channel equalization with the last voltage swing/pre-emphasis level which will succeed. Both issues can lead to a blank screen.
v2: - improve commit message
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=64880 Tested-by: Jeremy Moles <cubicool@gmail.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/gpu/drm/i915/i915_reg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3516,7 +3516,7 @@ #define EDP_LINK_TRAIN_600MV_0DB_IVB (0x30 <<22) #define EDP_LINK_TRAIN_600MV_3_5DB_IVB (0x36 <<22) #define EDP_LINK_TRAIN_800MV_0DB_IVB (0x38 <<22) -#define EDP_LINK_TRAIN_800MV_3_5DB_IVB (0x33 <<22) +#define EDP_LINK_TRAIN_800MV_3_5DB_IVB (0x3e <<22) /* legacy values */ #define EDP_LINK_TRAIN_500MV_0DB_IVB (0x00 <<22)
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