diff --git a/arch/arm/dts/mt7981-emmc-rfb.dts b/arch/arm/dts/mt7981-emmc-rfb.dts
index 2b7eae9..a0913c5 100644
--- a/arch/arm/dts/mt7981-emmc-rfb.dts
+++ b/arch/arm/dts/mt7981-emmc-rfb.dts
@@ -18,6 +18,11 @@
 		tick-timer = &timer0;
 	};
 
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x10000000>;
+	};
+
 	reg_3p3v: regulator-3p3v {
 		  compatible = "regulator-fixed";
 		  regulator-name = "fixed-3.3V";