diff --git a/boards/arm/v2m_musca_b1/v2m_musca_b1_musca_b1_ns.dts b/boards/arm/v2m_musca_b1/v2m_musca_b1_musca_b1_ns.dts
index c24d8c256754c..1a4560286ce05 100644
--- a/boards/arm/v2m_musca_b1/v2m_musca_b1_musca_b1_ns.dts
+++ b/boards/arm/v2m_musca_b1/v2m_musca_b1_musca_b1_ns.dts
@@ -6,6 +6,7 @@
 
 /dts-v1/;
 
+#include <mem.h>
 #include <arm/armv8-m.dtsi>
 
 / {
@@ -20,6 +21,7 @@
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash0;
 		zephyr,shell-uart = &uart1;
+		zephyr,code-partition = &slot0_ns_partition;
 	};
 
 	cpus {
@@ -42,7 +44,44 @@
 
 	flash0: flash@a070000 {
 		/* Embedded flash */
+		compatible = "soc-nv-flash";
 		reg = <0xa070000 0x1a0000>;
+		erase-block-size = <4096>;
+		write-block-size = <4>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* This code memory region must match what the TF-M
+			 * project has defined for that board - the multi-image
+			 * boot is used in Zephyr. See memory layout details in:
+			 *
+			 * https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/platform/ext/target/arm/musca_b1/partition/flash_layout.h
+			 */
+			slot0_partition: partition@0 {
+				reg = <0x00000000 DT_SIZE_K(256)>;
+			};
+
+			slot0_ns_partition: partition@40000 {
+				reg = <0x00040000 DT_SIZE_K(512)>;
+			};
+
+			slot1_partition: partition@c0000 {
+				reg = <0x000c0000 DT_SIZE_K(256)>;
+			};
+
+			slot1_ns_partition: partition@100000 {
+				reg = <0x00100000 DT_SIZE_K(512)>;
+			};
+
+			scratch_partition: partition@180000 {
+				reg = <0x00180000 DT_SIZE_K(96)>;
+			};
+		};
 	};
 
 	sram0: memory@20040000 {