diff --git a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.cmake b/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.cmake
deleted file mode 100644
index ffa5932c15..0000000000
--- a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.cmake
+++ /dev/null
@@ -1,5 +0,0 @@
-set(MCU_VARIANT nrf52840)
-set(LD_FILE_GNU ${CMAKE_CURRENT_LIST_DIR}/nrf52840_mdk_dongle.ld)
-
-function(update_board TARGET)
-endfunction()
diff --git a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.h b/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.h
deleted file mode 100644
index 072cb27143..0000000000
--- a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2020, Ha Thach (tinyusb.org)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * This file is part of the TinyUSB stack.
- */
-
-#ifndef BOARD_H_
-#define BOARD_H_
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-#define _PINNUM(port, pin)    ((port)*32 + (pin))
-
-// LED
-#define LED_PIN               _PINNUM(0, 23)
-#define LED_STATE_ON          0
-
-// Button
-#define BUTTON_PIN            _PINNUM(0, 18)
-#define BUTTON_STATE_ACTIVE   0
-
-// UART
-#define UART_RX_PIN           2
-#define UART_TX_PIN           3
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif /* BOARD_H_ */
diff --git a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.mk b/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.mk
deleted file mode 100644
index f25ec8f345..0000000000
--- a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/board.mk
+++ /dev/null
@@ -1,15 +0,0 @@
-MCU_VARIANT = nrf52840
-CFLAGS += -DNRF52840_XXAA
-
-LD_FILE = $(BOARD_PATH)/$(BOARD).ld
-
-# flash using Nordic nrfutil (pip3 install nrfutil)
-# 	make BOARD=nrf52840_mdk_dongle SERIAL=/dev/ttyACM0 all flash
-NRFUTIL = nrfutil
-
-$(BUILD)/$(PROJECT).zip: $(BUILD)/$(PROJECT).hex
-	$(NRFUTIL) pkg generate --hw-version 52 --sd-req 0x0000 --debug-mode --application $^ $@
-
-flash: $(BUILD)/$(PROJECT).zip
-	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0)
-	$(NRFUTIL) dfu usb-serial --package $^ -p $(SERIAL) -b 115200
diff --git a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld b/hw/bsp/nrf/boards/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld
deleted file mode 100644
index a6bc6dcfe6..0000000000
--- a/hw/bsp/nrf/boards/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld
+++ /dev/null
@@ -1,13 +0,0 @@
-/* Linker script to configure memory regions. */
-
-SEARCH_DIR(.)
-/*GROUP(-lgcc -lc -lnosys) not compatible with clang*/
-
-MEMORY
-{
-  FLASH (rx) : ORIGIN = 0x1000, LENGTH = 0xE0000-0x1000
-  RAM (rwx) :  ORIGIN = 0x20000008, LENGTH = 0x3fff8
-}
-
-
-INCLUDE "nrf_common.ld"
diff --git a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.cmake b/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.cmake
deleted file mode 100644
index cc370aac80..0000000000
--- a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.cmake
+++ /dev/null
@@ -1,4 +0,0 @@
-set(MCU_VARIANT nrf52840)
-
-function(update_board TARGET)
-endfunction()
diff --git a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.h b/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.h
deleted file mode 100644
index bc203f0735..0000000000
--- a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * The MIT License (MIT)
- *
- * Copyright (c) 2020, Ha Thach (tinyusb.org)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- * This file is part of the TinyUSB stack.
- */
-
-#ifndef BOARD_H_
-#define BOARD_H_
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-#define _PINNUM(port, pin)    ((port)*32 + (pin))
-
-// LED
-#define LED_PIN               _PINNUM(1, 13)
-#define LED_STATE_ON          0
-
-// Button
-#define BUTTON_PIN            _PINNUM(0, 15)
-#define BUTTON_STATE_ACTIVE   0
-
-// UART
-#define UART_RX_PIN     25
-#define UART_TX_PIN     24
-
-#ifdef __cplusplus
- }
-#endif
-
-#endif /* BOARD_H_ */
diff --git a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.mk b/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.mk
deleted file mode 100644
index be2ed33147..0000000000
--- a/hw/bsp/nrf/boards/raytac_mdbt50q_rx/board.mk
+++ /dev/null
@@ -1,7 +0,0 @@
-MCU_VARIANT = nrf52840
-CFLAGS += -DNRF52840_XXAA
-
-LD_FILE = hw/mcu/nordic/nrfx/mdk/nrf52840_xxaa.ld
-
-# flash using jlink
-flash: flash-jlink