diff --git a/fdts/stm32mp15-fw-config.dtsi b/fdts/stm32mp15-fw-config.dtsi
new file mode 100644
index 0000000..4f2841f
--- /dev/null
+++ b/fdts/stm32mp15-fw-config.dtsi
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ */
+
+#include <common/tbbr/tbbr_img_def.h>
+
+#include <platform_def.h>
+
+/dts-v1/;
+
+/ {
+	dtb-registry {
+		compatible = "fconf,dyn_cfg-dtb_registry";
+
+		hw-config {
+			load-address = <0x0 STM32MP_HW_CONFIG_BASE>;
+			max-size = <STM32MP_HW_CONFIG_MAX_SIZE>;
+			id = <HW_CONFIG_ID>;
+		};
+
+		nt_fw {
+			load-address = <0x0 STM32MP_BL33_BASE>;
+			max-size = <STM32MP_BL33_MAX_SIZE>;
+			id = <BL33_IMAGE_ID>;
+		};
+
+#ifdef AARCH32_SP_OPTEE
+		tos_fw {
+			load-address = <0x0 STM32MP_OPTEE_BASE>;
+			max-size = <STM32MP_OPTEE_SIZE>;
+			id = <BL32_IMAGE_ID>;
+		};
+#else
+		tos_fw {
+			load-address = <0x0 STM32MP_BL32_BASE>;
+			max-size = <STM32MP_BL32_SIZE>;
+			id = <BL32_IMAGE_ID>;
+		};
+
+		tos_fw-config {
+			load-address = <0x0 STM32MP_BL32_DTB_BASE>;
+			max-size = <STM32MP_BL32_DTB_SIZE>;
+			id = <TOS_FW_CONFIG_ID>;
+		};
+#endif
+	};
+};