mx31/mx35/mx51/mx53/mx6: add watchdog
Use a common watchdog driver for all these cpus.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/doc/README.watchdog b/doc/README.watchdog
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+Watchdog driver general info
+
+CONFIG_HW_WATCHDOG
+ This enables hw_watchdog_reset to be called during various loops,
+ including waiting for a character on a serial port. But it
+ does not also call hw_watchdog_init. Boards which want this
+ enabled must call this function in their board file. This split
+ is useful because some rom's enable the watchdog when downloading
+ new code, so it must be serviced, but the board would rather it
+ was off. And, it cannot always be turned off once on.
+
+CONFIG_WATCHDOG_TIMEOUT_MSECS
+ Can be used to change the timeout for i.mx31/35/5x/6x.
+ If not given, will default to maximum timeout. This would
+ be 128000 msec for i.mx31/35/5x/6x.
+
+CONFIG_AT91SAM9_WATCHDOG
+ Available for AT91SAM9 to service the watchdog.
+
+CONFIG_FTWDT010_WATCHDOG
+ Available for FTWDT010 to service the watchdog.
+
+CONFIG_FTWDT010_HW_TIMEOUT
+ Can be used to change the timeout for FTWDT010.
+
+CONFIG_IMX_WATCHDOG
+ Available for i.mx31/35/5x/6x to service the watchdog. This is not
+ automatically set because some boards (vision2) still need to define
+ their own hw_watchdog_reset routine.