--- a/arch/arm/dts/mt7981.dtsi
+++ b/arch/arm/dts/mt7981.dtsi
@@ -33,6 +33,30 @@
 		};
 	};
 
+	psci {
+		compatible  = "arm,psci-0.2";
+		method      = "smc";
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		/* 64 KiB reserved for ramoops/pstore */
+		ramoops@42ff0000 {
+			compatible = "ramoops";
+			reg = <0x42ff0000 0x10000>;
+			record-size = <0x1000>;
+		};
+
+		/* 192 KiB reserved for ARM Trusted Firmware (BL31 + BL32) */
+		secmon@43000000 {
+			reg = <0x43000000 0x30000>;
+			no-map;
+		};
+	};
+
 	gpt_clk: gpt_dummy20m {
 		compatible = "fixed-clock";
 		clock-frequency = <13000000>;