--- a/arch/arm/dts/mt7988.dtsi
+++ b/arch/arm/dts/mt7988.dtsi
@@ -63,6 +63,30 @@
 		#clock-cells = <0>;
 	};
 
+	psci {
+		compatible  = "arm,psci-0.2";
+		method      = "smc";
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* 64 KiB reserved for ramoops/pstore */
+		ramoops@42ff0000 {
+			compatible = "ramoops";
+			reg = <0 0x42ff0000 0 0x10000>;
+			record-size = <0x1000>;
+		};
+
+		/* 320 KiB reserved for ARM Trusted Firmware (BL31+BL32) */
+		secmon_reserved: secmon@43000000 {
+			reg = <0 0x43000000 0 0x50000>;
+			no-map;
+		};
+	};
+
 	hwver: hwver {
 		compatible = "mediatek,hwver", "syscon";
 		reg = <0 0x8000000 0 0x1000>;