watchdog: atcwdt200: Add driver for Andes ATCWDT200

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Add support for the Andes ATCWDT200 watchdog timer. The driver implements
programmable reset and interrupt timers, and includes automatic detection
of the supported IntTime bit-width.

Integrated with the Linux watchdog framework, it supports basic operations
including start, stop, ping, timeout configuration, and system reset via
the restart handler.

Signed-off-by: CL Wang <cl634@andestech.com>
Link: https://lore.kernel.org/r/20260115081444.2452357-3-cl634@andestech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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CL Wang 2026-01-15 16:14:43 +08:00 • committed by Guenter Roeck

parent fec053e452

commit e4e0848ad0

3 changed files with 590 additions and 0 deletions

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9

drivers/watchdog/Kconfig

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1

drivers/watchdog/Makefile

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580

drivers/watchdog/atcwdt200_wdt.c

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