diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
index d4ba989b1c9d..6f2e04ac6281 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
@@ -3255,6 +3255,21 @@ static void dw_hdmi_connector_atomic_commit(struct drm_connector *connector,
 		set_dw_hdmi_hdcp_enable(hdmi, connector, state);
 }
 
+void dw_hdmi_qp_set_quant_range(struct dw_hdmi_qp *hdmi)
+{
+	void *data = hdmi->plat_data->phy_data;
+
+	if (hdmi->disabled)
+		return;
+
+	if (hdmi->plat_data->get_quant_range)
+		hdmi->hdmi_data.quant_range =
+			hdmi->plat_data->get_quant_range(data);
+
+	hdmi_config_AVI(hdmi, hdmi->curr_conn, &hdmi->previous_mode);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_qp_set_quant_range);
+
 void dw_hdmi_qp_set_output_type(struct dw_hdmi_qp *hdmi, u64 val)
 {
 	hdmi->force_output = val;
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index a0fdcdf3ba9a..88cbe5788030 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -3227,15 +3227,13 @@ dw_hdmi_rockchip_attach_properties(struct drm_connector *connector,
 		drm_object_attach_property(&connector->base, prop, 0);
 	}
 
-	if (!hdmi->is_hdmi_qp) {
-		prop = drm_property_create_enum(connector->dev, 0,
-						"quant_range",
-						quant_range_enum_list,
-						ARRAY_SIZE(quant_range_enum_list));
-		if (prop) {
-			hdmi->quant_range = prop;
-			drm_object_attach_property(&connector->base, prop, 0);
-		}
+	prop = drm_property_create_enum(connector->dev, 0,
+					"quant_range",
+					quant_range_enum_list,
+					ARRAY_SIZE(quant_range_enum_list));
+	if (prop) {
+		hdmi->quant_range = prop;
+		drm_object_attach_property(&connector->base, prop, 0);
 	}
 
 	prop = connector->dev->mode_config.hdr_output_metadata_property;
@@ -3364,8 +3362,12 @@ dw_hdmi_rockchip_set_property(struct drm_connector *connector,
 		u64 quant_range = hdmi->hdmi_quant_range;
 
 		hdmi->hdmi_quant_range = val;
-		if (quant_range != hdmi->hdmi_quant_range)
-			dw_hdmi_set_quant_range(hdmi->hdmi);
+		if (quant_range != hdmi->hdmi_quant_range) {
+			if (hdmi->is_hdmi_qp)
+				dw_hdmi_qp_set_quant_range(hdmi->hdmi_qp);
+			else
+				dw_hdmi_set_quant_range(hdmi->hdmi);
+		}
 		return 0;
 	} else if (property == config->hdr_output_metadata_property) {
 		return 0;
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 557e5d4efbe9..9e4e4b114914 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -356,6 +356,7 @@ void dw_hdmi_qp_audio_enable(struct dw_hdmi_qp *hdmi);
 void dw_hdmi_qp_audio_disable(struct dw_hdmi_qp *hdmi);
 int dw_hdmi_qp_set_plugged_cb(struct dw_hdmi_qp *hdmi, hdmi_codec_plugged_cb fn,
 			      struct device *codec_dev);
+void dw_hdmi_qp_set_quant_range(struct dw_hdmi_qp *hdmi);
 void dw_hdmi_qp_set_output_type(struct dw_hdmi_qp *hdmi, u64 val);
 bool dw_hdmi_qp_get_output_whether_hdmi(struct dw_hdmi_qp *hdmi);
 int dw_hdmi_qp_get_output_type_cap(struct dw_hdmi_qp *hdmi);