drm/i915: WARN when LPT-LP is not paired with ULT CPU

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c413aab6eb74..9ebe895c17d6 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -459,11 +459,13 @@ void intel_detect_pch(struct drm_device *dev)
                                 dev_priv->num_pch_pll = 0;
                                 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
                                 WARN_ON(!IS_HASWELL(dev));
+                                WARN_ON(IS_ULT(dev));
                         } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
                                 dev_priv->pch_type = PCH_LPT;
                                 dev_priv->num_pch_pll = 0;
                                 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
                                 WARN_ON(!IS_HASWELL(dev));
+                                WARN_ON(!IS_ULT(dev));
                         }
                         BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS);
                 }