diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index bfb00e383587..0ce988af1300 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14260,6 +14260,10 @@ static bool intel_crt_present(struct drm_device *dev) if (HAS_PCH_LPT_H(dev) && I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED) return false; + /* DDI E can't be used if DDI A requires 4 lanes */ + if (HAS_DDI(dev) && I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES) + return false; + if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support) return false; |