drm/i915/dp: don't bother with DP PLL for PCH attached eDP

We don't use the CPU DP PLL with PCH attached eDP panels, so don't
bother to enable it.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d4ef20598da8..ada7319f0eaf 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -775,7 +775,7 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
         if (intel_crtc->pipe == 1 && !HAS_PCH_CPT(dev))
                 intel_dp->DP |= DP_PIPEB_SELECT;
 
-        if (is_edp(intel_dp)) {
+        if (is_edp(intel_dp) && !is_pch_edp(intel_dp)) {
                 /* don't miss out required setting for eDP */
                 intel_dp->DP |= DP_PLL_ENABLE;
                 if (adjusted_mode->clock < 200000)