This overlay configures the imxrt1020 EVK board to use its lpuart2 serial
port to communicate with other board (in this case nRF21540-DK), which
is the RCP for OpenThread protocol.
The nRF Zephyr RCP is the one from Nordic (v2.7.0):
west build -p always -b nrf21540dk/nrf52840 -S logging
nrf/samples/openthread/coprocessor
The same UART (on nRF) can be used for testing/debugging purposes with
using the ot-cli's SPINEL communication program:
sudo ./build/posix/src/posix/ot-cli 'spinel+hdlc+uart:///dev/ttyACM1?u
art-baudrate=1000000' --verbose
Signed-off-by: Lukasz Majewski <lukma@denx.de>
5b1a2e740d