diff --git a/target/linux/ramips/dts/mt7620a.dtsi b/target/linux/ramips/dts/mt7620a.dtsi
index 7542d43bae0..ef430b1b9f3 100644
--- a/target/linux/ramips/dts/mt7620a.dtsi
+++ b/target/linux/ramips/dts/mt7620a.dtsi
@@ -522,7 +522,7 @@
 		reg = <0x10130000 0x4000>;
 
 		bus-width = <4>;
-		max-frequency = <24000000>;
+		max-frequency = <48000000>;
 		cap-mmc-highspeed;
 		cap-sd-highspeed;
 		disable-wp;
diff --git a/target/linux/ramips/dts/mt7621.dtsi b/target/linux/ramips/dts/mt7621.dtsi
index 600cea4a4fd..24e80835dd9 100644
--- a/target/linux/ramips/dts/mt7621.dtsi
+++ b/target/linux/ramips/dts/mt7621.dtsi
@@ -363,7 +363,7 @@
 		reg = <0x1e130000 0x4000>;
 
 		bus-width = <4>;
-		max-frequency = <48000000>;
+		max-frequency = <50000000>;
 		cap-mmc-highspeed;
 		cap-sd-highspeed;
 		disable-wp;
diff --git a/target/linux/ramips/dts/mt7628an.dtsi b/target/linux/ramips/dts/mt7628an.dtsi
index e705d46b1e5..47dd4df2766 100644
--- a/target/linux/ramips/dts/mt7628an.dtsi
+++ b/target/linux/ramips/dts/mt7628an.dtsi
@@ -376,7 +376,7 @@
 		reg = <0x10130000 0x4000>;
 
 		bus-width = <4>;
-		max-frequency = <24000000>;
+		max-frequency = <48000000>;
 		cap-mmc-highspeed;
 		cap-sd-highspeed;
 		disable-wp;