Angelo Dureghello 9b8bc514a0
drivers: watchdog: add mcf watchdog support ...
This watchdog driver applies to the following
mcf families:
- mcf52x2 (5271 5275 5282)
- mcf532x (5329 5373)
- mcf523x (5235)
Cpu's not listed for each family does not have WDT module.
Note, after some attempts testing by qemu on 5208 i
finally abandoned, watchdog seems not implemented properly.
The driver has been tested in a real M5282EVM.
Signed-off-by: Angelo Dureghello <angelo@kernel-space.org >
---
Changes for v2:
- remove unnecessary hardcoded timeouts
- remove unnecessary hw_watchdog_xxx stuff
- rewrite wdog module reg calculation
- using IS_ENABLED() where possible
Changes for v3:
- remove hardcoded 4s test
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