diff --git a/drivers/phy/mediatek/phy-mtk-dp.c b/drivers/phy/mediatek/phy-mtk-dp.c
index 31266e7ca324..232fd3f1ff1b 100644
--- a/drivers/phy/mediatek/phy-mtk-dp.c
+++ b/drivers/phy/mediatek/phy-mtk-dp.c
@@ -85,7 +85,7 @@ struct mtk_dp_phy {
 static int mtk_dp_phy_init(struct phy *phy)
 {
 	struct mtk_dp_phy *dp_phy = phy_get_drvdata(phy);
-	u32 driving_params[] = {
+	static const u32 driving_params[] = {
 		DRIVING_PARAM_3_DEFAULT,
 		DRIVING_PARAM_4_DEFAULT,
 		DRIVING_PARAM_5_DEFAULT,