diff --git a/arch/arm/boot/dts/amlogic/mesong12a.dtsi b/arch/arm/boot/dts/amlogic/mesong12a.dtsi
index 6adb61f83de4..b81b0ab5eb9d 100644
--- a/arch/arm/boot/dts/amlogic/mesong12a.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesong12a.dtsi
@@ -1792,8 +1792,8 @@
 	defendkey: defendkey {
 	compatible = "amlogic, defendkey";
 	reg = <0xff630218 0x4>; /*RNG_USR_DATA*/
-	mem_size = <0x1000>;
-	status = "disabled";
+	mem_size = <0 0x100000>;
+	status = "okay";
 	};
 
 	aml_dma {
diff --git a/arch/arm64/boot/dts/amlogic/mesong12a.dtsi b/arch/arm64/boot/dts/amlogic/mesong12a.dtsi
index b10dfbac06f5..0d0a4bdfa55a 100644
--- a/arch/arm64/boot/dts/amlogic/mesong12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12a.dtsi
@@ -1790,10 +1790,10 @@
 	};
 
 	defendkey: defendkey {
-	compatible = "amlogic, defendkey";
-	reg = <0x0 0xff630218 0x0 0x4>; /*RNG_USR_DATA*/
-	mem_size = <0x0 0x1000>;
-	status = "disabled";
+		compatible = "amlogic, defendkey";
+		reg = <0x0 0xff630218 0x0 0x4>; /*RNG_USR_DATA*/
+		mem_size = <0x0 0x100000>;
+		status = "okay";
 	};
 
 	aml_dma {