diff --git a/fdts/stm32mp15-fw-config.dtsi b/fdts/stm32mp15-fw-config.dtsi
new file mode 100644
index 000000000..4f2841f8e
--- /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
+	};
+};
diff --git a/fdts/stm32mp157a-avenger96-fw-config.dts b/fdts/stm32mp157a-avenger96-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157a-avenger96-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157a-dk1-fw-config.dts b/fdts/stm32mp157a-dk1-fw-config.dts
new file mode 100644
index 000000000..83116d103
--- /dev/null
+++ b/fdts/stm32mp157a-dk1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157a-ed1-fw-config.dts b/fdts/stm32mp157a-ed1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157a-ed1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157a-ev1-fw-config.dts b/fdts/stm32mp157a-ev1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157a-ev1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157c-dk2-fw-config.dts b/fdts/stm32mp157c-dk2-fw-config.dts
new file mode 100644
index 000000000..83116d103
--- /dev/null
+++ b/fdts/stm32mp157c-dk2-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157c-ed1-fw-config.dts b/fdts/stm32mp157c-ed1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157c-ed1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157c-ev1-fw-config.dts b/fdts/stm32mp157c-ev1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157c-ev1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157c-lxa-mc1-fw-config.dts b/fdts/stm32mp157c-lxa-mc1-fw-config.dts
new file mode 100644
index 000000000..9ee09e93e
--- /dev/null
+++ b/fdts/stm32mp157c-lxa-mc1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157c-odyssey-fw-config.dts b/fdts/stm32mp157c-odyssey-fw-config.dts
new file mode 100644
index 000000000..9ee09e93e
--- /dev/null
+++ b/fdts/stm32mp157c-odyssey-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157d-dk1-fw-config.dts b/fdts/stm32mp157d-dk1-fw-config.dts
new file mode 100644
index 000000000..83116d103
--- /dev/null
+++ b/fdts/stm32mp157d-dk1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157d-ed1-fw-config.dts b/fdts/stm32mp157d-ed1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157d-ed1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157d-ev1-fw-config.dts b/fdts/stm32mp157d-ev1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157d-ev1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157f-dk2-fw-config.dts b/fdts/stm32mp157f-dk2-fw-config.dts
new file mode 100644
index 000000000..83116d103
--- /dev/null
+++ b/fdts/stm32mp157f-dk2-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x20000000 /* 512MB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157f-ed1-fw-config.dts b/fdts/stm32mp157f-ed1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157f-ed1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"
diff --git a/fdts/stm32mp157f-ev1-fw-config.dts b/fdts/stm32mp157f-ev1-fw-config.dts
new file mode 100644
index 000000000..2abbe50e6
--- /dev/null
+++ b/fdts/stm32mp157f-ev1-fw-config.dts
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) 2020-2021, STMicroelectronics - All Rights Reserved
+ */
+
+#define DDR_SIZE	0x40000000 /* 1GB */
+#include "stm32mp15-fw-config.dtsi"