diff --git a/arch/arm/boot/dts/rk3288-p977.dts b/arch/arm/boot/dts/rk3288-p977.dts
index 34b43c1a2ad2..ac11071bd30c 100755
--- a/arch/arm/boot/dts/rk3288-p977.dts
+++ b/arch/arm/boot/dts/rk3288-p977.dts
@@ -138,8 +138,8 @@
 };
 
 &emmc {
-	clock-frequency = <50000000>;
-        clock-freq-min-max = <400000 50000000>;
+	clock-frequency = <200000000>;
+        clock-freq-min-max = <400000 200000000>;
 
         supports-highspeed;
 	supports-emmc;