diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.board b/boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.board
deleted file mode 100644
index c3912d786e0c..000000000000
--- a/boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32H7B3I Discovery kit board configuration
-
-# Copyright (c) 2022 Byte-Lab d.o.o. <dev@byte-lab.com>
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STM32H7B3I_DK
-	bool "STM32H7B3I Discovery Kit Development Board"
-	depends on SOC_STM32H7B3XXQ
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.defconfig b/boards/st/stm32h7b3i_dk/Kconfig.defconfig
similarity index 91%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.defconfig
rename to boards/st/stm32h7b3i_dk/Kconfig.defconfig
index 8a32fb1c68fc..39101c47f7b6 100644
--- a/boards/boards_legacy/arm/stm32h7b3i_dk/Kconfig.defconfig
+++ b/boards/st/stm32h7b3i_dk/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_STM32H7B3I_DK
 
-config BOARD
-	default "stm32h7b3i_dk"
-
 config INPUT
 	default y if LVGL
 
diff --git a/boards/st/stm32h7b3i_dk/Kconfig.stm32h7b3i_dk b/boards/st/stm32h7b3i_dk/Kconfig.stm32h7b3i_dk
new file mode 100644
index 000000000000..c243bf05acd7
--- /dev/null
+++ b/boards/st/stm32h7b3i_dk/Kconfig.stm32h7b3i_dk
@@ -0,0 +1,5 @@
+# Copyright (c) 2022 Byte-Lab d.o.o. <dev@byte-lab.com>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32H7B3I_DK
+	select SOC_STM32H7B3XXQ
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/arduino_r3_connector.dtsi b/boards/st/stm32h7b3i_dk/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/arduino_r3_connector.dtsi
rename to boards/st/stm32h7b3i_dk/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/board.cmake b/boards/st/stm32h7b3i_dk/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/board.cmake
rename to boards/st/stm32h7b3i_dk/board.cmake
diff --git a/boards/st/stm32h7b3i_dk/board.yml b/boards/st/stm32h7b3i_dk/board.yml
new file mode 100644
index 000000000000..5516412eac93
--- /dev/null
+++ b/boards/st/stm32h7b3i_dk/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: stm32h7b3i_dk
+  vendor: st
+  socs:
+    - name: stm32h7b3xx
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/doc/img/stm32h7b3i_dk.jpg b/boards/st/stm32h7b3i_dk/doc/img/stm32h7b3i_dk.jpg
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/doc/img/stm32h7b3i_dk.jpg
rename to boards/st/stm32h7b3i_dk/doc/img/stm32h7b3i_dk.jpg
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/doc/index.rst b/boards/st/stm32h7b3i_dk/doc/index.rst
similarity index 98%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/doc/index.rst
rename to boards/st/stm32h7b3i_dk/doc/index.rst
index 83d188584265..98f00c342348 100644
--- a/boards/boards_legacy/arm/stm32h7b3i_dk/doc/index.rst
+++ b/boards/st/stm32h7b3i_dk/doc/index.rst
@@ -68,8 +68,8 @@ The current Zephyr stm32h7b3i_dk board configuration supports the following hard
 
 Other hardware features have not been enabled yet for this board.
 
-The default configuration per core can be found in the defconfig file:
-``boards/arm/stm32h7b3i_dk/stm32h7b3i_dk_defconfig``
+The default configuration can be found in the defconfig file:
+:zephyr_file:`boards/st/stm32h7b3i_dk/stm32h7b3i_dk_defconfig`
 
 Pin Mapping
 ===========
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk.dts b/boards/st/stm32h7b3i_dk/stm32h7b3i_dk.dts
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk.dts
rename to boards/st/stm32h7b3i_dk/stm32h7b3i_dk.dts
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk.yaml b/boards/st/stm32h7b3i_dk/stm32h7b3i_dk.yaml
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk.yaml
rename to boards/st/stm32h7b3i_dk/stm32h7b3i_dk.yaml
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk_defconfig b/boards/st/stm32h7b3i_dk/stm32h7b3i_dk_defconfig
similarity index 89%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk_defconfig
rename to boards/st/stm32h7b3i_dk/stm32h7b3i_dk_defconfig
index 913a1ed5dbd6..bb3b8c0178c6 100644
--- a/boards/boards_legacy/arm/stm32h7b3i_dk/stm32h7b3i_dk_defconfig
+++ b/boards/st/stm32h7b3i_dk/stm32h7b3i_dk_defconfig
@@ -2,9 +2,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
 # Set SoC present on the board
-CONFIG_SOC_SERIES_STM32H7X=y
-CONFIG_SOC_STM32H7B3XXQ=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/stm32h7b3i_dk/support/openocd.cfg b/boards/st/stm32h7b3i_dk/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/stm32h7b3i_dk/support/openocd.cfg
rename to boards/st/stm32h7b3i_dk/support/openocd.cfg