1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 2a2ab306ad84..a2bd698fe2f7 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -371,6 +371,8 @@ static enum drm_mode_status
 intel_dp_mst_mode_valid(struct drm_connector *connector,
                         struct drm_display_mode *mode)
 {
+        int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
+
         /* TODO - validate mode against available PBN for link */
         if (mode->clock < 10000)
                 return MODE_CLOCK_LOW;
@@ -378,6 +380,9 @@ intel_dp_mst_mode_valid(struct drm_connector *connector,
         if (mode->flags & DRM_MODE_FLAG_DBLCLK)
                 return MODE_H_ILLEGAL;
 
+        if (mode->clock > max_dotclk)
+                return MODE_CLOCK_HIGH;
+
         return MODE_OK;
 }