diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 0539262e69d3..bc50d97f2553 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -149,6 +149,7 @@ struct hdmi_audio_param {
 struct mtk_hdmi_conf {
 	bool tz_disabled;
 	bool cea_modes_only;
+	unsigned long max_mode_clock;
 };
 
 struct mtk_hdmi {
@@ -1226,6 +1227,10 @@ static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 	if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
 		return MODE_BAD;
 
+	if (hdmi->conf->max_mode_clock &&
+	    mode->clock > hdmi->conf->max_mode_clock)
+		return MODE_CLOCK_HIGH;
+
 	if (mode->clock < 27000)
 		return MODE_CLOCK_LOW;
 	if (mode->clock > 297000)