diff --git a/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi b/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
index 83a789f287..3813efaa53 100644
--- a/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
+++ b/target/linux/ramips/dts/mt7620a_asus_rt-ac5x.dtsi
@@ -27,7 +27,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+
+		spi-max-frequency = <50000000>;
+		m25p,fast-read;
 
 		partitions {
 			compatible = "fixed-partitions";