diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst
new file mode 100644
index 00000000000..6e2fdd53391
--- /dev/null
+++ b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/index.rst
@@ -0,0 +1,108 @@
+================
+ST STM32N6570-DK
+================
+
+.. tags:: chip:stm32, chip:stm32n6, chip:stm32n657
+
+.. figure:: stm32n6570-dk-front.jpg
+   :align: center
+   :alt: STM32N6570-DK Front
+
+   STM32N6570-DK Front
+
+.. figure:: stm32n6570-dk-back.jpg
+   :align: center
+   :alt: STM32N6570-DK Back
+
+   STM32N6570-DK Back
+
+The STM32N6570-DK Discovery kit is based on the STM32N657X0H3Q
+Arm Cortex-M55 microcontroller.
+
+Loading and running
+===================
+
+Use SRAM loading for routine debugging and external flash for persistent
+boot, reset testing and standalone operation.  The console is the ST-LINK
+Virtual COM Port at 115200 8N1.
+
+Persistent flash
+----------------
+
+OpenOCD adds the STM32N6 ROM header to ``nuttx.bin`` and programs the
+on-board NOR flash with its ``stmqspi`` driver.  Use an OpenOCD version
+that provides ``target/stm32n6x.cfg``.
+
+Build and program the persistent boot image with:
+
+.. code:: console
+
+   $ make flash
+
+This erases the affected flash sectors, programs and verifies the image,
+and resets the board.  ``OPENOCD`` and ``OPENOCD_TARGET`` can override the
+OpenOCD executable and target script.  The board's ``scripts/flash.cfg``
+configures the NOR pins, clocks and geometry for the native flash driver.
+
+For a CMake build configured in ``build``:
+
+.. code:: console
+
+   $ cmake --build build --target flash
+
+Both targets build ``nuttx.bin`` before flashing.  With CMake, ``OPENOCD``
+and ``OPENOCD_TARGET`` are cache variables set with ``-D`` at configuration.
+
+The boot ROM loads NuttX from flash and starts it without a debugger or
+separate FSBL.
+The header and padding occupy the first 1 KiB at ``0x34180000``; NuttX is
+linked at ``0x34180400``.  The ROM download buffer limits the binary to
+511 KiB.  The generated image is unauthenticated and requires a device
+that permits unauthenticated boot.
+
+SRAM debugging
+--------------
+
+Build with ``make`` or ``cmake --build build``.  Start OpenOCD using its
+standard ST-LINK and STM32N6 scripts:
+
+.. code:: console
+
+   $ openocd -f interface/stlink.cfg -c 'transport select swd' \
+         -f target/stm32n6x.cfg -c 'reset_config srst_only srst_nogate'
+
+In another terminal, open the ELF with GDB.  Use ``build/nuttx`` instead of
+``nuttx`` for CMake:
+
+.. code:: console
+
+   $ arm-none-eabi-gdb nuttx
+   (gdb) target extended-remote :3333
+   (gdb) monitor reset halt
+   (gdb) load
+   (gdb) set $msp = *(unsigned int *)0x34180400
+   (gdb) set $pc = *(unsigned int *)0x34180404
+   (gdb) hbreak nx_start
+   (gdb) continue
+
+``load`` writes the ELF sections into SRAM without programming external
+flash.  The next two commands initialize the stack pointer and entry point
+from the vector table.  Continue again after reaching ``nx_start`` to run
+NSH.  Reset before each reload; resetting after ``load`` boots the image
+stored in flash instead.  The SRAM image is lost on power-off.
+
+To inspect an already running image, attach with its matching ELF and omit
+the reset, load and register-setting commands.
+
+NSH enables ``CONFIG_STM32N6_DEBUG`` to reopen debug access after ROM boot
+and includes debug symbols.  These debugging steps require an installed
+image that enables debug access.  Stop GDB and OpenOCD before running either
+flash target.
+
+Configurations
+==============
+
+nsh
+---
+
+Minimal NuttShell configuration.
diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-back.jpg b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-back.jpg
new file mode 100644
index 00000000000..de32714d373
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diff --git a/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-front.jpg b/Documentation/platforms/arm/stm32n6/boards/stm32n6570-dk/stm32n6570-dk-front.jpg
new file mode 100644
index 00000000000..ec4da9bec4a
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diff --git a/Documentation/platforms/arm/stm32n6/index.rst b/Documentation/platforms/arm/stm32n6/index.rst
index 241cca916c3..fdc1fd004e5 100644
--- a/Documentation/platforms/arm/stm32n6/index.rst
+++ b/Documentation/platforms/arm/stm32n6/index.rst
@@ -5,10 +5,6 @@ ST STM32N6
 This is a port of NuttX to the STM32N6 family.
 The STM32N6 is a chip based on the Arm Cortex-M55.
 
-Development is performed on the Nucleo-N657X0-Q.  At this time only the
-STM32N657X0 is supported.  Kconfig will need updates to support other
-MCUs in the family.
-
 Supported MCUs
 ==============
 
diff --git a/boards/Kconfig b/boards/Kconfig
index 17f3873221b..bd03388b768 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -3498,6 +3498,14 @@ config ARCH_BOARD_NUCLEO_N657X0_Q
 		code directly into SRAM via the on-board ST-Link V3EC, with
 		the NSH console on USART1 (ST-Link Virtual COM Port).
 
+config ARCH_BOARD_STM32N6570_DK
+	bool "STM32N6570-DK"
+	depends on ARCH_CHIP_STM32N657X0
+	select ARCH_HAVE_LEDS
+	---help---
+		STMicro STM32N6570-DK Discovery kit based on the STM32N657X0
+		MCU (Cortex-M55).
+
 config ARCH_BOARD_STM32L562E_DK
 	bool "STM32L562E-DK"
 	depends on ARCH_CHIP_STM32L562QE
@@ -4302,6 +4310,7 @@ config ARCH_BOARD
 	default "nucleo-h533re"                if ARCH_BOARD_NUCLEO_H533RE
 	default "nucleo-h563zi"                if ARCH_BOARD_NUCLEO_H563ZI
 	default "nucleo-n657x0-q"              if ARCH_BOARD_NUCLEO_N657X0_Q
+	default "stm32n6570-dk"                if ARCH_BOARD_STM32N6570_DK
 	default "nucleo-u5a5zj-q"              if ARCH_BOARD_NUCLEO_U5A5ZJ_Q
 	default "nucleo-u3c5zi-q"              if ARCH_BOARD_NUCLEO_U3C5ZI_Q
 	default "nucleo-c562re"                if ARCH_BOARD_NUCLEO_C562RE
@@ -5029,6 +5038,9 @@ endif
 if ARCH_BOARD_NUCLEO_N657X0_Q
 source "boards/arm/stm32n6/nucleo-n657x0-q/Kconfig"
 endif
+if ARCH_BOARD_STM32N6570_DK
+source "boards/arm/stm32n6/stm32n6570-dk/Kconfig"
+endif
 if ARCH_BOARD_STM32L562E_DK
 source "boards/arm/stm32l5/stm32l562e-dk/Kconfig"
 endif
diff --git a/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt b/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
new file mode 100644
index 00000000000..e2233dd6aa1
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
@@ -0,0 +1,42 @@
+# ##############################################################################
+# boards/arm/stm32n6/stm32n6570-dk/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+add_subdirectory(src)
+
+if(CONFIG_RAW_BINARY)
+  set(OPENOCD
+      openocd
+      CACHE STRING "OpenOCD executable")
+  set(OPENOCD_TARGET
+      target/stm32n6x.cfg
+      CACHE STRING "OpenOCD target script")
+
+  add_custom_target(
+    flash
+    COMMAND
+      ${OPENOCD} -f interface/stlink.cfg -c "transport select swd" -f
+      ${OPENOCD_TARGET} -f ${CMAKE_CURRENT_LIST_DIR}/scripts/flash.cfg -c
+      "stm32n6_program nuttx.bin"
+    WORKING_DIRECTORY ${NUTTX_BINARY_DIR}
+    USES_TERMINAL VERBATIM)
+  add_dependencies(flash nuttx-bin)
+endif()
diff --git a/boards/arm/stm32n6/stm32n6570-dk/Kconfig b/boards/arm/stm32n6/stm32n6570-dk/Kconfig
new file mode 100644
index 00000000000..dfcb5c354a4
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/Kconfig
@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_STM32N6570_DK
+
+endif
diff --git a/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig b/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig
new file mode 100644
index 00000000000..eb07976447c
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/configs/nsh/defconfig
@@ -0,0 +1,37 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="stm32n6570-dk"
+CONFIG_ARCH_BOARD_STM32N6570_DK=y
+CONFIG_ARCH_CHIP="stm32n6"
+CONFIG_ARCH_CHIP_STM32=y
+CONFIG_ARCH_CHIP_STM32N657X0=y
+CONFIG_ARCH_CHIP_STM32N6=y
+CONFIG_ARCH_INTERRUPTSTACK=4096
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_BOARD_LOOPSPERMSEC=21000
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_FULLOPT=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_FS_PROCFS=y
+CONFIG_HAVE_CXX=y
+CONFIG_HAVE_CXXINITIALIZE=y
+CONFIG_IDLETHREAD_STACKSIZE=4096
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_RAM_SIZE=2620416
+CONFIG_RAM_START=0x34180400
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_STM32N6_DEBUG=y
+CONFIG_STM32_USART1=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_USART1_SERIAL_CONSOLE=y
diff --git a/boards/arm/stm32n6/stm32n6570-dk/include/board.h b/boards/arm/stm32n6/stm32n6570-dk/include/board.h
new file mode 100644
index 00000000000..bcd57f8d0ee
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/include/board.h
@@ -0,0 +1,165 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/include/board.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H
+#define __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+/* Clock tree (single PLL1 fed from the internal HSI):
+ *
+ *   HSI 64 MHz / M=4 * N=50 = 800 MHz VCO
+ *     IC1  /4 = 200 MHz  -> CPU clock (CPUSW)
+ *     IC2  /8 = 100 MHz  \
+ *     IC6 /12 = 66.7 MHz  > SYSCLK components (SYSSW IC2_IC6_IC11)
+ *     IC11 /8 = 100 MHz  /
+ *   HPRE /2  = 50 MHz   -> HCLK
+ *   PPRE1 /1 = 50 MHz   -> PCLK1
+ *   PPRE2 /1 = 50 MHz   -> PCLK2
+ *
+ * Works with the default VOS SCALE1, no SMPS overdrive required.  Higher
+ * CPU frequencies (600/800 MHz) are deferred to a follow-up.
+ */
+
+#define STM32_HSI_FREQUENCY     64000000ul
+
+#define STM32_PLL1_M            4
+#define STM32_PLL1_N            50
+#define STM32_PLL1_IC1_DIV      4
+
+#define STM32_CPUCLK_FREQUENCY  200000000ul
+#define STM32_SYSCLK_FREQUENCY  (STM32_CPUCLK_FREQUENCY / 2)
+#define STM32_HCLK_FREQUENCY    (STM32_CPUCLK_FREQUENCY / 4)
+#define STM32_PCLK1_FREQUENCY   STM32_HCLK_FREQUENCY
+#define STM32_PCLK2_FREQUENCY   STM32_HCLK_FREQUENCY
+
+/* Timer input clock = SYSCLK (TIMPRE=0 default) */
+
+#define STM32_APB1_TIM_FREQUENCY STM32_SYSCLK_FREQUENCY
+#define STM32_APB2_TIM_FREQUENCY STM32_SYSCLK_FREQUENCY
+
+/* I/O voltage domains ******************************************************/
+
+/* VDDIO2 and VDDIO3 are supplied at 1.8 V on the Discovery kit.
+ * Mark both supplies valid and select their 1.8 V range before the
+ * common STM32N6 startup configures I/O compensation.
+ */
+
+#define BOARD_PWR_VDDIO  (PWR_SVMCR3_VDDIO2SV    | PWR_SVMCR3_VDDIO3SV | \
+                          PWR_SVMCR3_VDDIO2VRSEL | PWR_SVMCR3_VDDIO3VRSEL)
+
+/* LED definitions **********************************************************/
+
+/* LD1 (green, PO1) is active high; LD2 (red, PG10) is active low. */
+
+/* LED index values for use with board_userled() */
+
+#define BOARD_LED1        0
+#define BOARD_LED2        1
+#define BOARD_NLEDS       2
+
+#define BOARD_LED_GREEN   BOARD_LED1
+#define BOARD_LED_RED     BOARD_LED2
+
+/* LED bits for use with board_userled_all() */
+
+#define BOARD_LED1_BIT    (1 << BOARD_LED1)
+#define BOARD_LED2_BIT    (1 << BOARD_LED2)
+
+/* OS event indications when CONFIG_ARCH_LEDS is enabled:
+ *
+ *   SYMBOL                 Meaning                  Green  Red
+ *   ---------------------  -----------------------  -----  -----
+ */
+
+#define LED_STARTED        0 /* NuttX has started     OFF    OFF   */
+#define LED_HEAPALLOCATE   0 /* Heap allocated        OFF    OFF   */
+#define LED_IRQSENABLED    0 /* Interrupts enabled    OFF    OFF   */
+#define LED_STACKCREATED   1 /* Idle stack created    ON     OFF   */
+#define LED_INIRQ          2 /* In an interrupt       N/C    N/C   */
+#define LED_SIGNAL         2 /* In a signal handler   N/C    N/C   */
+#define LED_ASSERTION      2 /* An assertion failed   N/C    N/C   */
+#define LED_PANIC          3 /* The system crashed    OFF    Blink */
+
+/* Alternate function pin selections ****************************************/
+
+/* USART1 GPIOs *************************************************************/
+
+/* USART1 (ST-LINK Virtual COM Port): PE5=TX (AF7), PE6=RX (AF7)
+ * Connected to the on-board ST-Link to provide a Virtual COM Port.
+ */
+
+#define GPIO_USART1_TX   GPIO_USART1_TX_1
+#define GPIO_USART1_RX   GPIO_USART1_RX_1
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_board_initialize
+ *
+ * Description:
+ *   All STM32N6 architectures must provide the following entry point.
+ *   This entry point is called early in the initialization -- after all
+ *   memory has been configured and mapped but before any devices
+ *   have been initialized.
+ *
+ ****************************************************************************/
+
+void stm32_board_initialize(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_STM32N6_STM32N6570_DK_INCLUDE_BOARD_H */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs b/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
new file mode 100644
index 00000000000..8c64959b07a
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
@@ -0,0 +1,47 @@
+##############################################################################
+# boards/arm/stm32n6/stm32n6570-dk/scripts/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+##############################################################################
+
+include ${TOPDIR}/.config
+include ${TOPDIR}/tools/Config.mk
+include ${TOPDIR}/arch/arm/src/armv8-m/Toolchain.defs
+
+ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)flash.ld
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)$(DELIM)binfmt$(DELIM)libnxflat$(DELIM)gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+OPENOCD ?= openocd
+OPENOCD_TARGET ?= target/stm32n6x.cfg
+
+ifeq ($(CONFIG_RAW_BINARY),y)
+define FLASH
+	$(Q) $(OPENOCD) -f interface/stlink.cfg -c 'transport select swd' \
+		-f $(OPENOCD_TARGET) -f $(BOARD_DIR)/scripts/flash.cfg \
+		-c 'stm32n6_program nuttx.bin'
+endef
+endif
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
new file mode 100644
index 00000000000..5134077c371
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
@@ -0,0 +1,148 @@
+##############################################################################
+# boards/arm/stm32n6/stm32n6570-dk/scripts/flash.cfg
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+##############################################################################
+
+# Load interface/stlink.cfg and target/stm32n6x.cfg before this file.
+
+reset_config srst_only srst_nogate
+flash bank stm32n6570_dk.nor stmqspi 0x70000000 0 0 0 $_TARGETNAME 0x5802a000
+proc stm32n6570_dk_flash_init {} {
+    # Stop inherited interrupts and instruction caching while OpenOCD runs
+    # SRAM algorithms.  The boot ROM also leaves stack limits set.
+
+    mww 0xe000e010 0
+    mww 0xe000ed04 0x0a000000
+    mmw 0xe000ed14 0 0x20000
+    mww 0xe000ef50 0
+    reg msplim_s 0
+    reg psplim_s 0
+    reg primask_s 1
+
+    # PWR, GPION and all XSPIM clocks.  Reset both XSPI controllers before
+    # restoring the direct XSPI2-to-port-2 mapping left changed by ROM.
+
+    mww 0x56028a5c 0x42000
+    mww 0x56028a60 0x3020
+    mww 0x56028a20 0x3020
+    mww 0x56029220 0x3020
+
+    # HCLK kernel source and conservative /8 prescaler.
+
+    mmw 0x56028158 0 0x30
+
+    # The DK NOR uses the 1.8 V VDDIO3 domain.
+
+    mmw 0x5602483c 0x04000200 0
+
+    # PN1 NCS, PN2 MOSI, PN3 MISO, PN6 CLK, AF9.
+
+    mmw 0x56023400 0x20a8 0x30fc
+    mmw 0x56023408 0x30fc 0
+    mmw 0x5602340c 0x504 0x3ffc
+    mmw 0x56023420 0x09009990 0x0f00fff0
+
+    # Map XSPI2 to port 2 and configure single-lane, 32-bit-address reads.
+
+    mww 0x5802b400 0
+    mww 0x5802a008 0x001a0700
+    mww 0x5802a00c 7
+    mww 0x5802a108 0
+    mww 0x5802a100 0x01003101
+    mww 0x5802a110 0x13
+    mww 0x5802a000 0x30000001
+
+    # MX66UW1G45G geometry and standard 4-byte read/program/erase commands.
+    # This part is absent from some OpenOCD JEDEC ID tables.
+
+    stmqspi set stm32n6570_dk.nor MX66UW1G45G 0x8000000 256 \
+        0x13 0 0x12 0x60 0x10000 0xdc
+}
+
+# Add the unauthenticated ROM header v2.3 (UM3234) as part of programming.
+# The vector table follows the header and padding at offset 0x400.
+
+proc stm32n6_program {image} {
+    set input [open $image rb]
+    set data [read $input]
+    close $input
+
+    # Jim Tcl strings can contain UTF-8; use the binary byte count.
+
+    set size [string bytelength $data]
+    if {$size < 8 || $size > 0x7fc00} {
+        error "NuttX binary must contain vectors and fit in 511 KiB"
+    }
+
+    binary scan $data ii stack entry
+    if {$stack < 0x34180400 || $stack > 0x34400000 || ($stack & 3)} {
+        error "Initial SP must be word-aligned and inside AXISRAM"
+    }
+    if {!($entry & 1) || ($entry & ~1) < 0x34180400 ||
+        ($entry & ~1) >= 0x34180400 + $size} {
+        error "Reset vector must point into the payload at 0x34180400"
+    }
+
+    set checksum 0
+    binary scan $data c* bytes
+    foreach byte $bytes {
+        set checksum [expr {($checksum + ($byte & 0xff)) & 0xffffffff}]
+    }
+    set padding [expr {(-$size) & 31}]
+    set length [expr {0x1c0 + $size + $padding}]
+    set header [lrepeat 256 0]
+    foreach {offset value} [list \
+        0x00 0x324d5453 \
+        0x64 $checksum \
+        0x68 0x00020300 \
+        0x6c $length \
+        0x70 $entry \
+        0x78 0xffffffff \
+        0x84 0x80000000 \
+        0x88 0x1a0 \
+        0x8c 0x10 \
+        0xa0 0xffff5453 \
+        0xa4 0x1a0] {
+        lset header [expr {$offset / 4}] $value
+    }
+
+    set boot [file rootname $image]-boot.bin
+    set output [open $boot wb]
+    puts -nonewline $output [binary format i* $header]
+    puts -nonewline $output $data
+    puts -nonewline $output [binary format x$padding]
+    close $output
+
+    # Reject a truncated or incorrectly encoded image before touching flash.
+
+    if {[file size $boot] != 0x400 + $size + $padding} {
+        error "Boot image size does not match the ROM header"
+    }
+
+    # Keep the current debug access until the replacement image is verified.
+
+    init
+    halt
+    stm32n6570_dk_flash_init
+    echo [flash write_image erase $boot 0x70000000 bin]
+    echo [verify_image $boot 0x70000000 bin]
+    reset run
+    shutdown
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
new file mode 100644
index 00000000000..54fb1d8846e
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
@@ -0,0 +1,109 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/scripts/flash.ld
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/* The STM32N657X0 boot ROM copies the image from external flash into
+ * AXISRAM2.  The STM32 image header occupies 0x34180000-0x341803ff;
+ * the vector table and payload start at 0x34180400.  The ROM download
+ * buffer ends at 0x34200000, limiting the payload to 511 KiB.
+ * After boot, the remaining contiguous AXISRAM is available for data
+ * and the heap through 0x34400000.
+ */
+
+MEMORY
+{
+    sram (rwx) : ORIGIN = 0x34180400, LENGTH = 2620416
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(_stext)
+SECTIONS
+{
+    .text : {
+        _stext = ABSOLUTE(.);
+        *(.vectors)
+        *(.text .text.*)
+        *(.fixup)
+        *(.gnu.warning)
+        *(.rodata .rodata.*)
+        *(.gnu.linkonce.t.*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.got)
+        *(.gcc_except_table)
+        *(.gnu.linkonce.r.*)
+        _etext = ABSOLUTE(.);
+    } > sram
+
+    .init_section : {
+        _sinit = ABSOLUTE(.);
+        KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+        KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o) .ctors))
+        _einit = ABSOLUTE(.);
+    } > sram
+
+    .ARM.extab : {
+        *(.ARM.extab*)
+    } > sram
+
+    __exidx_start = ABSOLUTE(.);
+    .ARM.exidx : {
+        *(.ARM.exidx*)
+    } > sram
+    __exidx_end = ABSOLUTE(.);
+
+    .data : {
+        _eronly = ABSOLUTE(.);
+        _sdata = ABSOLUTE(.);
+        *(.data .data.*)
+        *(.gnu.linkonce.d.*)
+        CONSTRUCTORS
+        . = ALIGN(4);
+        _edata = ABSOLUTE(.);
+    } > sram
+
+    ASSERT(_edata <= 0x34200000,
+           "STM32N6 boot ROM payload exceeds 511 KiB")
+
+    .bss : {
+        _sbss = ABSOLUTE(.);
+        *(.bss .bss.*)
+        *(.gnu.linkonce.b.*)
+        *(COMMON)
+        . = ALIGN(4);
+        _ebss = ABSOLUTE(.);
+    } > sram
+
+    /* Stabs debugging sections. */
+
+    .stab 0 : { *(.stab) }
+    .stabstr 0 : { *(.stabstr) }
+    .stab.excl 0 : { *(.stab.excl) }
+    .stab.exclstr 0 : { *(.stab.exclstr) }
+    .stab.index 0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment 0 : { *(.comment) }
+    .debug_abbrev 0 : { *(.debug_abbrev) }
+    .debug_info 0 : { *(.debug_info) }
+    .debug_line 0 : { *(.debug_line) }
+    .debug_pubnames 0 : { *(.debug_pubnames) }
+    .debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt b/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
new file mode 100644
index 00000000000..9304da05ae5
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
@@ -0,0 +1,33 @@
+# ##############################################################################
+# boards/arm/stm32n6/stm32n6570-dk/src/CMakeLists.txt
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+set(SRCS stm32_boot.c stm32_bringup.c)
+
+if(CONFIG_ARCH_LEDS)
+  list(APPEND SRCS stm32_autoleds.c)
+else()
+  list(APPEND SRCS stm32_userleds.c)
+endif()
+
+target_sources(board PRIVATE ${SRCS})
+
+set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_BOARD_DIR}/scripts/flash.ld")
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs b/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
new file mode 100644
index 00000000000..0714c5c2dcc
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
@@ -0,0 +1,36 @@
+##############################################################################
+# boards/arm/stm32n6/stm32n6570-dk/src/Make.defs
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+##############################################################################
+
+-include $(TOPDIR)/Make.defs
+
+ASRCS =
+CSRCS = stm32_boot.c stm32_bringup.c
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += stm32_autoleds.c
+else
+CSRCS += stm32_userleds.c
+endif
+
+DEPPATH += --dep-path board
+VPATH += :board
+CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
new file mode 100644
index 00000000000..aa42aa4d869
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
@@ -0,0 +1,103 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/src/stm32_autoleds.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "stm32_gpio.h"
+#include "stm32n6570-dk.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_autoled_initialize
+ *
+ * Description:
+ *   Configure both user LEDs as outputs, initially off.
+ *
+ ****************************************************************************/
+
+void board_autoled_initialize(void)
+{
+  stm32_configgpio(GPIO_LD1);
+  stm32_configgpio(GPIO_LD2);
+}
+
+/****************************************************************************
+ * Name: board_autoled_on
+ *
+ * Description:
+ *   Indicate successful startup with the green LED and panic with red.
+ *   Interrupt and signal events leave the LEDs unchanged.
+ *
+ ****************************************************************************/
+
+void board_autoled_on(int led)
+{
+  switch (led)
+    {
+      case LED_STARTED:
+        stm32_gpiowrite(GPIO_LD1, false);
+        stm32_gpiowrite(GPIO_LD2, true);
+        break;
+
+      case LED_STACKCREATED:
+        stm32_gpiowrite(GPIO_LD1, true);
+        break;
+
+      case LED_PANIC:
+        stm32_gpiowrite(GPIO_LD1, false);
+        stm32_gpiowrite(GPIO_LD2, false);
+        break;
+
+      default:
+        break;
+    }
+}
+
+/****************************************************************************
+ * Name: board_autoled_off
+ *
+ * Description:
+ *   Turn off the red LED between panic indications.
+ *
+ ****************************************************************************/
+
+void board_autoled_off(int led)
+{
+  if (led == LED_PANIC)
+    {
+      stm32_gpiowrite(GPIO_LD2, true);
+    }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
new file mode 100644
index 00000000000..b84940016a4
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
@@ -0,0 +1,83 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/src/stm32_boot.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <nuttx/board.h>
+
+#include "arm_internal.h"
+#include "stm32n6570-dk.h"
+
+#include <arch/board/board.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_board_initialize
+ *
+ * Description:
+ *   All STM32 architectures must provide the following entry point.  This
+ *   entry point is called early in the initialization -- after all memory
+ *   has been configured and mapped but before any devices have been
+ *   initialized.
+ *
+ ****************************************************************************/
+
+void stm32_board_initialize(void)
+{
+#ifdef CONFIG_ARCH_LEDS
+  /* Configure on-board LEDs if LED support has been selected. */
+
+  board_autoled_initialize();
+#endif
+}
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ *   If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
+ *   initialization call will be performed in the boot-up sequence to a
+ *   function called board_late_initialize().  board_late_initialize() will
+ *   be called immediately after up_initialize() is called and just before
+ *   the initial application is started.  This additional initialization
+ *   phase may be used, for example, to initialize board-specific device
+ *   drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+void board_late_initialize(void)
+{
+  /* Perform board-specific initialization here if so configured */
+
+  stm32_bringup();
+}
+#endif
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
new file mode 100644
index 00000000000..82212af087b
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
@@ -0,0 +1,87 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/src/stm32_bringup.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <syslog.h>
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <nuttx/leds/userled.h>
+
+#include "stm32n6570-dk.h"
+
+#include <arch/board/board.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library
+ *
+ ****************************************************************************/
+
+int stm32_bringup(void)
+{
+#if defined(CONFIG_FS_PROCFS) || \
+    (!defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER))
+  int ret;
+#endif
+
+#ifdef CONFIG_FS_PROCFS
+  /* Mount the procfs file system. */
+
+  ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
+    }
+#endif
+
+#if !defined(CONFIG_ARCH_LEDS) && defined(CONFIG_USERLED_LOWER)
+  /* Register the LED driver */
+
+  ret = userled_lower_initialize("/dev/userleds");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
+  return OK;
+}
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
new file mode 100644
index 00000000000..4c748429405
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
@@ -0,0 +1,127 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/src/stm32_userleds.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <nuttx/debug.h>
+
+#include <sys/param.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "stm32_gpio.h"
+#include "stm32n6570-dk.h"
+
+#ifndef CONFIG_ARCH_LEDS
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* This array maps an LED number to GPIO pin configuration and is indexed by
+ * BOARD_LED_<color>
+ */
+
+static const uint32_t g_ledcfg[BOARD_NLEDS] =
+{
+  GPIO_LD1,
+  GPIO_LD2,
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_userled_initialize
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the
+ *   board_userled_initialize() is available to initialize the LEDs from user
+ *   application logic.
+ *
+ ****************************************************************************/
+
+uint32_t board_userled_initialize(void)
+{
+  int i;
+
+  /* Configure LD1 and LD2 GPIOs for output */
+
+  for (i = 0; i < nitems(g_ledcfg); i++)
+    {
+      stm32_configgpio(g_ledcfg[i]);
+    }
+
+  return BOARD_NLEDS;
+}
+
+/****************************************************************************
+ * Name: board_userled
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the board_userled() is
+ *   available to control the LEDs from user application logic.
+ *
+ ****************************************************************************/
+
+void board_userled(int led, bool ledon)
+{
+  if ((unsigned)led < nitems(g_ledcfg))
+    {
+      /* LD1 is active high; LD2 is active low. */
+
+      stm32_gpiowrite(g_ledcfg[led], led == BOARD_LED_RED ? !ledon : ledon);
+    }
+}
+
+/****************************************************************************
+ * Name: board_userled_all
+ *
+ * Description:
+ *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
+ *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the board_userled_all()
+ *   is available to control the LED from user application logic.
+ *
+ ****************************************************************************/
+
+void board_userled_all(uint32_t ledset)
+{
+  int i;
+
+  /* Apply the polarity of each LED. */
+
+  for (i = 0; i < nitems(g_ledcfg); i++)
+    {
+      board_userled(i, (ledset & (1 << i)) != 0);
+    }
+}
+
+#endif /* !CONFIG_ARCH_LEDS */
diff --git a/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h b/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
new file mode 100644
index 00000000000..586aeb3ee3f
--- /dev/null
+++ b/boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+ * boards/arm/stm32n6/stm32n6570-dk/src/stm32n6570-dk.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H
+#define __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <stdint.h>
+
+#include "stm32_gpio.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* LED definitions **********************************************************/
+
+/* LD1 is active high; LD2 is active low.  Start with both LEDs off. */
+
+#define GPIO_LD1       (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_2MHZ | \
+                        GPIO_OUTPUT_CLEAR | GPIO_PORTO | GPIO_PIN1)
+#define GPIO_LD2       (GPIO_OUTPUT | GPIO_PUSHPULL | GPIO_SPEED_2MHZ | \
+                        GPIO_OUTPUT_SET | GPIO_PORTG | GPIO_PIN10)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: stm32_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library
+ *
+ ****************************************************************************/
+
+int stm32_bringup(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_STM32N6_STM32N6570_DK_SRC_STM32N6570_DK_H */