diff --git a/fdts/stm32mp251.dtsi b/fdts/stm32mp251.dtsi
index f55a3b9..6e262bb 100644
--- a/fdts/stm32mp251.dtsi
+++ b/fdts/stm32mp251.dtsi
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
 /*
- * Copyright (C) 2023, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2023-2024, STMicroelectronics - All Rights Reserved
  * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for STMicroelectronics.
  */
 
@@ -99,6 +99,41 @@
 			};
 		};
 
+		bsec: efuse@44000000 {
+			compatible = "st,stm32mp25-bsec";
+			reg = <0x44000000 0x400>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uid_otp: uid-otp@14 {
+				reg = <0x14 0xc>;
+			};
+			part_number_otp: part-number-otp@24 {
+				reg = <0x24 0x4>;
+			};
+			nand_otp: otp16@40 {
+				reg = <0x40 0x4>;
+			};
+			lifecycle2_otp: otp18@48 {
+				reg = <0x48 0x4>;
+			};
+			nand2_otp: otp20@50 {
+				reg = <0x50 0x4>;
+			};
+			package_otp: package-otp@1e8 {
+				reg = <0x1e8 0x1>;
+			};
+			hconf1_otp: otp124@1f0 {
+				reg = <0x1f0 0x4>;
+			};
+			pkh_otp: otp144@240 {
+				reg = <0x240 0x20>;
+			};
+			oem_fip_enc_key: otp260@410 {
+				reg = <0x410 0x20>;
+			};
+		};
+
 		rcc: rcc@44200000 {
 			compatible = "st,stm32mp25-rcc";
 			reg = <0x44200000 0x10000>;