Changed how to get xtal frequency for Raspberry Pi Pico
Signed-off-by: Andrei-Edward Popa <andrei.popa105@yahoo.com>
Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
RP2040 requires watchdog load time in us, but Zephyr
watchdog window values are in ms. Make sure that it is
adjusted to hardware requirements.
Signed-off-by: Marcin Jabrzyk <marcin.jabrzyk@gmail.com>
This adds basic support for the watchdog timer on the RP2040 MCU and
Raspberry Pi Pico development board
Signed-off-by: Jamie McCrae <spam@helper3000.net>