diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8c6f4e2a2cb8638dc5b3390531118a47cc97ed2d..b6bb43875a03c6b726844ae994518566c7546b17 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14708,6 +14708,11 @@ static void intel_setup_outputs(struct drm_device *dev)
 	struct intel_encoder *encoder;
 	bool dpd_is_edp = false;
 
+	/*
+	 * intel_edp_init_connector() depends on this completing first, to
+	 * prevent the registeration of both eDP and LVDS and the incorrect
+	 * sharing of the PPS.
+	 */
 	intel_lvds_init(dev);
 
 	if (intel_crt_present(dev))
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 3cdea4d7a917ce520dae03a416289b2a051e9068..9493c8f765383e0b53bfad9ee2e7b5a960b417e9 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5313,6 +5313,19 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp,
 	if (!is_edp(intel_dp))
 		return true;
 
+	/*
+	 * On IBX/CPT we may get here with LVDS already registered. Since the
+	 * driver uses the only internal power sequencer available for both
+	 * eDP and LVDS bail out early in this case to prevent interfering
+	 * with an already powered-on LVDS power sequencer.
+	 */
+	if (intel_get_lvds_encoder(dev)) {
+		WARN_ON(!(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)));
+		DRM_INFO("LVDS was detected, not registering eDP\n");
+
+		return false;
+	}
+
 	pps_lock(intel_dp);
 	intel_edp_panel_vdd_sanitize(intel_dp);
 	pps_unlock(intel_dp);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 06fa25db3d32f4665f8ded28be8b3f4e1edb6033..21ba3df05241380068b74d3c3ec1cd214559facb 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1460,6 +1460,7 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
 
 /* intel_lvds.c */
 void intel_lvds_init(struct drm_device *dev);
+struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev);
 bool intel_is_dual_link_lvds(struct drm_device *dev);
 
 
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index e06b9036bebc6d3bddf41fd82aad9297e31c6d5e..72096fd28023c5d061a9ddafe1f9b27c6ce4a3a8 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -809,20 +809,22 @@ static const struct dmi_system_id intel_dual_link_lvds[] = {
 	{ }	/* terminating entry */
 };
 
-bool intel_is_dual_link_lvds(struct drm_device *dev)
+struct intel_encoder *intel_get_lvds_encoder(struct drm_device *dev)
 {
-	struct intel_encoder *encoder;
-	struct intel_lvds_encoder *lvds_encoder;
+	struct intel_encoder *intel_encoder;
 
-	for_each_intel_encoder(dev, encoder) {
-		if (encoder->type == INTEL_OUTPUT_LVDS) {
-			lvds_encoder = to_lvds_encoder(&encoder->base);
+	for_each_intel_encoder(dev, intel_encoder)
+		if (intel_encoder->type == INTEL_OUTPUT_LVDS)
+			return intel_encoder;
 
-			return lvds_encoder->is_dual_link;
-		}
-	}
+	return NULL;
+}
 
-	return false;
+bool intel_is_dual_link_lvds(struct drm_device *dev)
+{
+	struct intel_encoder *encoder = intel_get_lvds_encoder(dev);
+
+	return encoder && to_lvds_encoder(&encoder->base)->is_dual_link;
 }
 
 static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)