board: raytac: Add support for raytac_mdbt50q_cx_40_dongle

boards/raytac/mdbt50q_cx_40_dongle/CMakeLists.txt

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+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+zephyr_library_sources(board.c)

boards/raytac/mdbt50q_cx_40_dongle/Kconfig

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+# Raytac MDBT50Q-CX Dongle NRF52840 board configuration
+#
+# Copyright (c) 2018-2023 Nordic Semiconductor ASA
+# Copyright (c) 2025 Raytac Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_RAYTAC_MDBT50Q_CX_40_DONGLE
+
+config BOARD_HAS_NRF5_BOOTLOADER
+	bool "Board has nRF5 bootloader"
+	default y
+	help
+	  If selected, applications are linked so that they can be loaded by Nordic
+	  nRF5 bootloader.
+
+endif # BOARD_RAYTAC_MDBT50Q_CX_40_DONGLE

boards/raytac/mdbt50q_cx_40_dongle/Kconfig.defconfig

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+# Raytac MDBT50Q-CX-40 Dongle NRF52840 board configuration
+#
+# Copyright (c) 2018-2023 Nordic Semiconductor ASA
+# Copyright (c) 2025 Raytac Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_RAYTAC_MDBT50Q_CX_40_DONGLE
+
+# To let the nRF5 bootloader load an application, the application
+# must be linked after Nordic MBR, that is factory-programmed on the board.
+
+# Nordic nRF5 bootloader exists outside of the partitions specified in the
+# DTS file, so we manually override FLASH_LOAD_OFFSET to link the application
+# correctly, after Nordic MBR.
+
+# When building MCUBoot, MCUBoot itself will select USE_DT_CODE_PARTITION
+# which will make it link into the correct partition specified in DTS file,
+# the offset is applied here so that the full partition size can be used when
+# the bootloader Kconfig option has been disabled.
+
+config FLASH_LOAD_OFFSET
+	default 0x1000
+	depends on BOARD_HAS_NRF5_BOOTLOADER && (MCUBOOT || !USE_DT_CODE_PARTITION)
+
+source "boards/common/usb/Kconfig.cdc_acm_serial.defconfig"
+
+endif # BOARD_RAYTAC_MDBT50Q_CX_40_DONGLE

boards/raytac/mdbt50q_cx_40_dongle/Kconfig.raytac_mdbt50q_cx_40_dongle

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+# Raytac MDBT50Q-CX-40 Dongle nRF52840 board configuration
+#
+# Copyright (c) 2018 Nordic Semiconductor ASA
+# Copyright (c) 2025 Raytac Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_RAYTAC_MDBT50Q_CX_40_DONGLE
+	select SOC_NRF52840_QIAA

boards/raytac/mdbt50q_cx_40_dongle/board.c

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+/*
+ * Copyright (c) 2018 Nordic Semiconductor ASA.
+ * Copyright (c) 2025 Raytac Corporation.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/init.h>
+#include <hal/nrf_power.h>
+
+static int board_raytac_mdbt50q_cx_40_dongle_nrf52840_init(void)
+{
+
+	/* if the nrf52840dongle_nrf52840 board is powered from USB
+	 * (high voltage mode), GPIO output voltage is set to 1.8 volts by
+	 * default and that is not enough to turn the green and blue LEDs on.
+	 * Increase GPIO voltage to 3.0 volts.
+	 */
+	if ((nrf_power_mainregstatus_get(NRF_POWER) ==
+	     NRF_POWER_MAINREGSTATUS_HIGH) &&
+	    ((NRF_UICR->REGOUT0 & UICR_REGOUT0_VOUT_Msk) ==
+	     (UICR_REGOUT0_VOUT_DEFAULT << UICR_REGOUT0_VOUT_Pos))) {
+
+		NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen << NVMC_CONFIG_WEN_Pos;
+		while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {
+			;
+		}
+
+		NRF_UICR->REGOUT0 =
+		    (NRF_UICR->REGOUT0 & ~((uint32_t)UICR_REGOUT0_VOUT_Msk)) |
+		    (UICR_REGOUT0_VOUT_3V0 << UICR_REGOUT0_VOUT_Pos);
+
+		NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren << NVMC_CONFIG_WEN_Pos;
+		while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {
+			;
+		}
+
+		/* a reset is required for changes to take effect */
+		NVIC_SystemReset();
+	}
+
+	return 0;
+}
+
+SYS_INIT(board_raytac_mdbt50q_cx_40_dongle_nrf52840_init, PRE_KERNEL_1,
+	CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);

boards/raytac/mdbt50q_cx_40_dongle/board.cmake

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+# Copyright (c) 2018-2023 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+board_runner_args(jlink "--device=nrf52840_xxaa" "--speed=4000")
+board_runner_args(pyocd "--target=nrf52840" "--frequency=4000000")
+include(${ZEPHYR_BASE}/boards/common/nrfutil.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/pyocd.board.cmake)

boards/raytac/mdbt50q_cx_40_dongle/board.yml

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+board:
+  name: raytac_mdbt50q_cx_40_dongle
+  full_name: MDBT50Q-CX-40 Dongle
+  vendor: raytac
+  socs:
+  - name: nrf52840