From 076ed3b2955e5934e137abff39fe9e7180f236fe Mon Sep 17 00:00:00 2001
From: Chon Ming Lee <chon.ming.lee@intel.com>
Date: Wed, 9 Apr 2014 13:28:17 +0300
Subject: [PATCH] drm/i915/chv: Trigger phy common lane reset
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During cold boot, the display controller needs to deassert the common
lane reset.  Only do it once during intel_init_dpio for both PHYx2 and
PHYx1.

Besides, assert the common lane reset when disable pll.  This still
to be determined whether need to do it by driver.

Signed-off-by: Chon Ming Lee <chon.ming.lee@intel.com>
[vsyrjala: Don't disable DPIO PLL when using DSI]
[vsyrjala: Don't call vlv_disable_pll() by accident on CHV]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
[danvet: Move part of a moved comment back as suggested by Imre since
it's valid for both byt and chv.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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