From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeremy Moles , Imre Deak , Paulo Zanoni , Daniel Vetter Subject: [ 08/14] drm/i915: ivb: fix edp voltage swing reg val Date: Thu, 5 Sep 2013 13:28:19 -0700 Message-Id: <20130905202615.376741925@linuxfoundation.org> In-Reply-To: <20130905202614.354156084@linuxfoundation.org> References: <20130905202614.354156084@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Imre Deak commit 77fa4cbd5fa389e28419bbe8ac491b5fdd54840d upstream. Fix the typo introduced in commit 1a2eb4604b85c5efb343da8a4dcf41288fcfca85 Author: Keith Packard 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 Signed-off-by: Imre Deak Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter Signed-off-by: Greg Kroah-Hartman --- 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 @@ -3741,7 +3741,7 @@ #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)