Add board Alientek ATK-DNESP32S3B

boards/alientek/dnesp32s3b/Kconfig

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+# Copyright (c) 2024 Joel Guittet
+# Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+# SPDX-License-Identifier: Apache-2.0
+
+config HEAP_MEM_POOL_ADD_SIZE_BOARD
+	int
+	default 4096 if BOARD_DNESP32S3B_ESP32S3_PROCPU
+	default 256 if BOARD_DNESP32S3B_ESP32S3_APPCPU

boards/alientek/dnesp32s3b/Kconfig.dnesp32s3b

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+# Copyright (c) 2024 Joel Guittet
+# Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_DNESP32S3B
+	select SOC_ESP32S3_WROOM_N16R8
+	select SOC_ESP32S3_PROCPU if BOARD_DNESP32S3B_ESP32S3_PROCPU
+	select SOC_ESP32S3_APPCPU if BOARD_DNESP32S3B_ESP32S3_APPCPU

boards/alientek/dnesp32s3b/Kconfig.sysbuild

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+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+choice BOOTLOADER
+	default BOOTLOADER_MCUBOOT
+endchoice
+
+choice BOOT_SIGNATURE_TYPE
+	default BOOT_SIGNATURE_TYPE_NONE
+endchoice

boards/alientek/dnesp32s3b/board.cmake

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+# Copyright (c) 2024 Joel Guittet
+# SPDX-License-Identifier: Apache-2.0
+
+if(NOT "${OPENOCD}" MATCHES "^${ESPRESSIF_TOOLCHAIN_PATH}/.*")
+  set(OPENOCD OPENOCD-NOTFOUND)
+endif()
+find_program(OPENOCD openocd PATHS ${ESPRESSIF_TOOLCHAIN_PATH}/openocd-esp32/bin NO_DEFAULT_PATH)
+
+include(${ZEPHYR_BASE}/boards/common/esp32.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/alientek/dnesp32s3b/board.yml

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+board:
+  name: dnesp32s3b
+  full_name: DNESP32S3B
+  vendor: alientek
+  socs:
+    - name: esp32s3

boards/alientek/dnesp32s3b/dnesp32s3b-pinctrl.dtsi

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+/*
+ * Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/esp32s3-pinctrl.h>
+#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
+#include <zephyr/dt-bindings/pinctrl/esp32s3-gpio-sigmap.h>
+
+&pinctrl {
+	uart0_default: uart0_default {
+		group1 {
+			pinmux = <UART0_TX_GPIO43>;
+			output-high;
+		};
+
+		group2 {
+			pinmux = <UART0_RX_GPIO44>;
+			bias-pull-up;
+		};
+	};
+
+	i2c0_default: i2c0_default {
+		group1 {
+			pinmux = <I2C0_SCL_GPIO45>,
+				 <I2C0_SDA_GPIO48>;
+			drive-open-drain;
+		};
+	};
+};

boards/alientek/dnesp32s3b/dnesp32s3b_appcpu.dts

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+/*
+ * Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+ * SPDX-License-Identifier: Apache-2.0
+ */
+/dts-v1/;
+
+#include <espressif/esp32s3/esp32s3_wroom_n16r8.dtsi>
+#include <espressif/partitions_0x0_amp_16M.dtsi>
+
+/ {
+	model = "DNESP32S3B APPCPU";
+	compatible = "alientek,dnesp32s3b";
+
+	chosen {
+		zephyr,sram = &sram1;
+		zephyr,ipc_shm = &shm0;
+		zephyr,ipc = &ipm0;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_appcpu_partition;
+	};
+};
+
+&trng0 {
+	status = "okay";
+};
+
+&ipm0 {
+	status = "okay";
+};

boards/alientek/dnesp32s3b/dnesp32s3b_appcpu.yaml

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+identifier: dnesp32s3b/esp32s3/appcpu
+name: DNESP32S3B APPCPU
+type: mcu
+arch: xtensa
+toolchain:
+  - zephyr
+supported:
+  - uart
+testing:
+  ignore_tags:
+    - net
+    - bluetooth
+    - flash
+    - cpp
+    - posix
+    - watchdog
+    - logging
+    - kernel
+    - pm
+    - gpio
+    - crypto
+    - eeprom
+    - heap
+    - cmsis_rtos
+    - jwt
+    - zdsp
+vendor: alientek

boards/alientek/dnesp32s3b/dnesp32s3b_appcpu_defconfig

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+# Copyright (c) 2024 Joel Guittet
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_CLOCK_CONTROL=y

boards/alientek/dnesp32s3b/dnesp32s3b_procpu.dts

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+/*
+ * Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+ * SPDX-License-Identifier: Apache-2.0
+ */
+/dts-v1/;
+
+#include <espressif/esp32s3/esp32s3_wroom_n16r8.dtsi>
+#include <espressif/partitions_0x0_amp_16M.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+#include "dnesp32s3b-pinctrl.dtsi"
+
+/ {
+	model = "DNESP32S3B PROCPU";
+	compatible = "alientek,dnesp32s3b";
+
+	aliases {
+		led0 = &ledb;
+		led1 = &ledr;
+		sw0 = &b0;
+		sw1 = &k1;
+		sw2 = &k2;
+		watchdog0 = &wdt0;
+	};
+
+	chosen {
+		zephyr,sram = &sram1;
+		zephyr,console = &uart0;
+		zephyr,shell-uart = &uart0;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+		zephyr,bt-hci = &esp32_bt_hci;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		ledb: led_blue {
+			gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
+			label = "LEDB";
+		};
+
+		ledr: led_red {
+			gpios = <&io_expander 8 GPIO_ACTIVE_LOW>;
+			label = "LEDR";
+		};
+	};
+
+	buttons {
+		compatible = "gpio-keys";
+
+		b0: button_b0 {
+			gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+			label = "BOOT";
+			zephyr,code = <INPUT_KEY_0>;
+		};
+
+		k1: button_k1 {
+			gpios = <&io_expander 4 GPIO_ACTIVE_LOW>;
+			label = "KEY1";
+			zephyr,code = <INPUT_KEY_1>;
+		};
+
+		k2: button_k2 {
+			gpios = <&io_expander 3 GPIO_ACTIVE_LOW>;
+			label = "KEY2";
+			zephyr,code = <INPUT_KEY_2>;
+		};
+	};
+};
+
+&usb_serial {
+	status = "disabled";
+};
+
+&uart0 {
+	status = "okay";
+	pinctrl-0 = <&uart0_default>;
+	pinctrl-names = "default";
+
+	current-speed = <115200>;
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-names = "default";
+
+	clock-frequency = <I2C_BITRATE_STANDARD>;
+
+	io_expander: xl9555@20 {
+		compatible = "nxp,pca9555";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		ngpios = <16>;
+		int-gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+	};
+};
+
+&trng0 {
+	status = "okay";
+};
+
+&wdt0 {
+	status = "okay";
+};
+
+&wifi {
+	status = "okay";
+};
+
+&esp32_bt_hci {
+	status = "okay";
+};

boards/alientek/dnesp32s3b/dnesp32s3b_procpu.yaml

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+identifier: dnesp32s3b/esp32s3/procpu
+name: DNESP32S3B PROCPU
+type: mcu
+arch: xtensa
+toolchain:
+  - zephyr
+supported:
+  - gpio
+  - uart
+  - i2c
+  - watchdog
+vendor: alientek

boards/alientek/dnesp32s3b/dnesp32s3b_procpu_defconfig

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+# Copyright (c) 2025 Chen Xingyu <hi@xingrz.me>
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_UART_CONSOLE=y
+CONFIG_GPIO=y
+CONFIG_I2C=y
+CONFIG_CLOCK_CONTROL=y

boards/alientek/dnesp32s3b/doc/index.rst

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+.. zephyr:board:: dnesp32s3b
+
+Overview
+********
+
+DNESP32S3B is a development board from Alientek, featuring a compatible
+ESP32-S3-WROOM-1-N16R8 module and rich set of on-board peripherals, providing an
+out-of-the-box development experience for AIoT applications.
+
+It includes the following integrated components:
+
+- ATK-MWS3S module, compatible with ESP32-S3-WROOM-1-N16R8 (240MHz dual-core, Bluetooth LE, Wi-Fi, 16MB Flash and 8MB PSRAM)
+- 2KB EEPROM
+- 1 blue power LED (on when powered)
+- 1 red-blue dual-color user LED
+- 3 user buttons
+- 1 USB-A host port
+- 1 USB-C JTAG/programming port
+- 1 USB-C port connected to external CH343P for programming
+- 1 microSD card slot
+- 2 PH-2.0 UART connectors
+- 1 3x2 2.54mm GPIO header
+- 2.4-inch 320x240 I8080 LCD display with optional touch support
+- Buzzer
+- Ambient light sensor
+- QMI8658A 6-axis IMU
+- NS4168 audio codec with speaker and microphone
+
+Hardware
+********
+
+The board is based on the ESP32-S3 with 16MB of flash, 8MB of PSRAM, WiFi and BLE
+support. It has 3 USB ports (1 USB-A host, 1 USB-C JTAG/programming, and 1 USB-C
+connected to external CH343P for programming).
+
+.. include:: ../../../espressif/common/soc-esp32s3-features.rst
+   :start-after: espressif-soc-esp32s3-features
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+System requirements
+*******************
+
+.. include:: ../../../espressif/common/system-requirements.rst
+   :start-after: espressif-system-requirements
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+.. include:: ../../../espressif/common/building-flashing.rst
+   :start-after: espressif-building-flashing
+
+.. include:: ../../../espressif/common/board-variants.rst
+   :start-after: espressif-board-variants
+
+Debugging
+=========
+
+.. include:: ../../../espressif/common/openocd-debugging.rst
+   :start-after: espressif-openocd-debugging
+
+Sample Applications
+*******************
+
+The following code samples run out of the box on the DNESP32S3B board:
+
+* :zephyr:code-sample:`blinky`
+* :zephyr:code-sample:`button`
+
+References
+**********
+
+- `DNESP32S3B web page <https://www.alientek.com/Product_Details/118.html>`_
+
+.. target-notes::

boards/alientek/dnesp32s3b/support/openocd.cfg

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+# Copyright (c) 2024 Joel Guittet
+# SPDX-License-Identifier: Apache-2.0
+
+set ESP_RTOS none
+set ESP32_ONLYCPU 1
+
+# Source the JTAG interface configuration file
+source [find interface/esp_usb_jtag.cfg]
+# Source the ESP32-S3 configuration file
+source [find target/esp32s3.cfg]