diff --git a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi
index 2b468f9bb31..fac267abf4c 100644
--- a/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi
+++ b/target/linux/mediatek/dts/mt7988a-smartrg-mt-stuart.dtsi
@@ -481,8 +481,6 @@
 	max-frequency = <200000000>;
 	cap-mmc-highspeed;
 	mmc-hs200-1_8v;
-	mmc-hs400-1_8v;
-	hs400-ds-delay = <0x12814>;
 	vmmc-supply = <&reg_3p3v>;
 	vqmmc-supply = <&reg_1p8v>;
 	non-removable;