diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
index c52d09cf0888..fb5311a46c2e 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
@@ -160,6 +160,7 @@ &mmc2 {
 	mmc-ddr-1_8v;
 	mmc-hs200-1_8v;
 	non-removable;
+	max-frequency = <75000000>;
 	vmmc-supply = <&reg_cldo3>;
 	vqmmc-supply = <&reg_cldo1>;
 	status = "okay";