diff --git a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map.dtsi b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map.dtsi
index eafaf69b398..82e6288b880 100644
--- a/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map.dtsi
+++ b/boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-memory_map.dtsi
@@ -131,6 +131,10 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
+		ironside_se_reserved: partition@0 {
+			reg = <0x0 DT_SIZE_K(192)>;
+		};
+
 		cpuapp_boot_partition: partition@30000 {
 			reg = <0x30000 DT_SIZE_K(64)>;
 		};
diff --git a/boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280-memory_map_iron.dtsi b/boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280-memory_map_iron.dtsi
index d3aea1f979a..e2e67af0314 100644
--- a/boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280-memory_map_iron.dtsi
+++ b/boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280-memory_map_iron.dtsi
@@ -47,6 +47,10 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
+		ironside_se_reserved: partition@0 {
+			reg = <0x0 DT_SIZE_K(192)>;
+		};
+
 		cpuapp_boot_partition: partition@312000 {
 			reg = <0x312000 DT_SIZE_K(64)>;
 		};