diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 1cde6c045da257849af94536e9624235767b3dad..42fc5052819040c8fe81ac76a8db613132c50837 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -943,6 +943,9 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
 	else
 		dotclock = pipe_config->port_clock;
 
+	if (pipe_config->pixel_multiplier)
+		dotclock /= pipe_config->pixel_multiplier;
+
 	if (HAS_PCH_SPLIT(dev_priv->dev))
 		ironlake_check_encoder_dotclock(pipe_config, dotclock);