diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 9883ca3554c5..f9d6bf08e717 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -259,6 +259,11 @@ clkcfg: clkcfg@20002000 {
 			#reset-cells = <1>;
 		};
 
+		sysreg_scb: syscon@20003000 {
+			compatible = "microchip,mpfs-sysreg-scb", "syscon";
+			reg = <0x0 0x20003000 0x0 0x1000>;
+		};
+
 		ccc_se: clock-controller@38010000 {
 			compatible = "microchip,mpfs-ccc";
 			reg = <0x0 0x38010000 0x0 0x1000>, <0x0 0x38020000 0x0 0x1000>,
@@ -521,10 +526,14 @@ usb: usb@20201000 {
 			status = "disabled";
 		};
 
-		mbox: mailbox@37020000 {
+		control_scb: syscon@37020000 {
+			compatible = "microchip,mpfs-control-scb", "syscon";
+			reg = <0x0 0x37020000 0x0 0x100>;
+		};
+
+		mbox: mailbox@37020800 {
 			compatible = "microchip,mpfs-mailbox";
-			reg = <0x0 0x37020000 0x0 0x58>, <0x0 0x2000318C 0x0 0x40>,
-			      <0x0 0x37020800 0x0 0x100>;
+			reg = <0x0 0x37020800 0x0 0x1000>;
 			interrupt-parent = <&plic>;
 			interrupts = <96>;
 			#mbox-cells = <1>;