diff --git a/rk356x/dr4-rk3568.dts b/rk356x/dr4-rk3568.dts
index 734a69f..0b84d44 100755
--- a/rk356x/dr4-rk3568.dts
+++ b/rk356x/dr4-rk3568.dts
@@ -287,26 +287,26 @@
 };
 
 &uart3 {
-    status = "okay";
+    status = "disabled";
     pinctrl-names = "default";
     pinctrl-0 = <&uart3m1_xfer>;
 };
 
 &uart4 {
-    status = "okay";
+    status = "disabled";
     pinctrl-names = "default";
     pinctrl-0 = <&uart4m0_xfer>;
 };
 
 &uart5 {
-    status = "okay";
+    status = "disabled";
     pinctrl-names = "default";
     pinctrl-0 = <&uart5m0_xfer>;
 };
 
 
 &uart6 {
-    status = "okay";
+    status = "disabled";
     pinctrl-names = "default";
     pinctrl-0 = <&uart6m1_xfer>;
 };