diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_common.dtsi b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_common.dtsi
index d29ca7020e..1ec76b9682 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_common.dtsi
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_common.dtsi
@@ -12,6 +12,21 @@
 		zephyr,flash-controller = &rram_controller;
 		zephyr,boot-mode = &boot_mode0;
 	};
+
+	soc {
+		reserved-memory {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			 nrf_kmu_reserved_push_area: memory@20000000 {
+				reg = <0x20000000 0x80>;
+				compatible = "zephyr,memory-region", "mmio-sram";
+				zephyr,memory-region = "nrf_kmu_reserved_push_area";
+				status = "okay";
+			 };
+		};
+	};
 };
 
 /* Override NCS default to use entire SRAM for application CPU. */
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice.dts
index 278ce56b18..e1a10cb272 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice.dts
@@ -63,9 +63,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001678 {
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice_mcuboot.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice_mcuboot.dts
index ebee46d319..ead9185c8b 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice_mcuboot.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l05_cpuapp_s115_softdevice_mcuboot.dts
@@ -99,9 +99,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001400 {
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_common.dtsi b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_common.dtsi
index b015fd32f4..d5743b751c 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_common.dtsi
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_common.dtsi
@@ -12,6 +12,21 @@
 		zephyr,flash-controller = &rram_controller;
 		zephyr,boot-mode = &boot_mode0;
 	};
+
+	soc {
+		reserved-memory {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			 nrf_kmu_reserved_push_area: memory@20000000 {
+				reg = <0x20000000 0x80>;
+				compatible = "zephyr,memory-region", "mmio-sram";
+				zephyr,memory-region = "nrf_kmu_reserved_push_area";
+				status = "okay";
+			 };
+		};
+	};
 };
 
 /* Override NCS default to use entire SRAM for application CPU. */
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice.dts
index 99759fa93f..4f1244e076 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice.dts
@@ -63,9 +63,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001678 {
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice_mcuboot.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice_mcuboot.dts
index f77faaab8f..43bc48abbb 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice_mcuboot.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l10_cpuapp_s115_softdevice_mcuboot.dts
@@ -99,9 +99,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001400 {
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_common.dtsi b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_common.dtsi
index 73e9c00537..55d1255865 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_common.dtsi
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_common.dtsi
@@ -12,6 +12,21 @@
 		zephyr,flash-controller = &rram_controller;
 		zephyr,boot-mode = &boot_mode0;
 	};
+
+	soc {
+		reserved-memory {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			 nrf_kmu_reserved_push_area: memory@20000000 {
+				reg = <0x20000000 0x80>;
+				compatible = "zephyr,memory-region", "mmio-sram";
+				zephyr,memory-region = "nrf_kmu_reserved_push_area";
+				status = "okay";
+			 };
+		};
+	};
 };
 
 /* Override NCS default to use entire SRAM for application CPU. */
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice.dts
index bfcd43669f..3065c83521 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice.dts
@@ -63,9 +63,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001678 {
diff --git a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice_mcuboot.dts b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice_mcuboot.dts
index 271799160b..0d9bea1604 100644
--- a/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice_mcuboot.dts
+++ b/boards/nordic/bm_nrf54l15dk/bm_nrf54l15dk_nrf54l15_cpuapp_s115_softdevice_mcuboot.dts
@@ -99,9 +99,9 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		softdevice_static_ram: partition@20000000 {
+		softdevice_static_ram: partition@20000080 {
 			label = "softdevice_static_ram";
-			reg = <0x20000000 DT_SIZE_K(5)>;
+			reg = <0x20000080 0x1380>;
 		};
 
 		softdevice_dynamic_ram: partition@20001400 {