boards: nordic: Add support for nRF52833dk_nrf52820 board

# nRF52833DK nRF52820 board configuration

# Copyright (c) 2020 Nordic Semiconductor ASA

# SPDX-License-Identifier: Apache-2.0

config BOARD_ENABLE_DCDC

	bool "Enable DCDC mode"

	select SOC_DCDC_NRF52X

	default y

	depends on BOARD_NRF52833DK_NRF52820

# nRF52833DK nRF52820 board configuration

# Copyright (c) 2020 Nordic Semiconductor ASA

# SPDX-License-Identifier: Apache-2.0

config BOARD_NRF52833DK_NRF52820

	bool "nRF52833 DK NRF52820"

	depends on SOC_NRF52820_QDAA

# nRF52833DK nRF52820 board configuration

# Copyright (c) 2020 Nordic Semiconductor ASA

# SPDX-License-Identifier: Apache-2.0

if BOARD_NRF52833DK_NRF52820

config BOARD

	default "nrf52833dk_nrf52820"

if USB

config USB_NRFX

	default y

config USB_DEVICE_STACK

	default y

endif # USB

config BT_CTLR

	default BT

endif # BOARD_NRF52833DK_NRF52820

# SPDX-License-Identifier: Apache-2.0

board_runner_args(nrfjprog "--nrf-family=NRF52")

board_runner_args(jlink "--device=nrf52" "--speed=4000")

board_runner_args(pyocd "--target=nrf52820" "--frequency=4000000")

include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)

include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

include(${ZEPHYR_BASE}/boards/common/pyocd.board.cmake)

include(${ZEPHYR_BASE}/boards/common/openocd-nrf5.board.cmake)

.. _nrf52833dk_nrf52820:

nRF52820 emulation on nRF52833 DK

#################################

Overview

********

The nrf52833dk_nrf52820 board is a modified version of the

:ref:`nrf52833dk_nrf52833` that enforces the limitations imposed by the nRF52820

IC, which is a variant of the original nRF52833. Since Nordic does not offer a

development kit for the nRF52820 you can use this board to develop for this IC

while using the nRF52833 Development Kit (PCA10100).

See :ref:`nrf52833dk_nrf52833` for more information about the development board

and `nRF52820 website`_ for the official reference on the IC itself.

References

**********

.. target-notes::

.. _nRF52820 website: https://www.nordicsemi.com/Products/Low-power-short-range-wireless/nRF52820