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authorTroy Kisky2012-10-22 10:19:01 -0500
committerStefano Babic2013-01-13 04:39:57 -0600
commitabbab70363dcdb270cbf24d47849214dd3a3e010 (patch)
tree2eb6f30be46ddc350e5635179dabdd126be2b0cd /doc
parent17c5ef20073c49ae1a10150b4194b25b6f1154fe (diff)
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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>
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1Watchdog driver general info
2
3CONFIG_HW_WATCHDOG
4 This enables hw_watchdog_reset to be called during various loops,
5 including waiting for a character on a serial port. But it
6 does not also call hw_watchdog_init. Boards which want this
7 enabled must call this function in their board file. This split
8 is useful because some rom's enable the watchdog when downloading
9 new code, so it must be serviced, but the board would rather it
10 was off. And, it cannot always be turned off once on.
11
12CONFIG_WATCHDOG_TIMEOUT_MSECS
13 Can be used to change the timeout for i.mx31/35/5x/6x.
14 If not given, will default to maximum timeout. This would
15 be 128000 msec for i.mx31/35/5x/6x.
16
17CONFIG_AT91SAM9_WATCHDOG
18 Available for AT91SAM9 to service the watchdog.
19
20CONFIG_FTWDT010_WATCHDOG
21 Available for FTWDT010 to service the watchdog.
22
23CONFIG_FTWDT010_HW_TIMEOUT
24 Can be used to change the timeout for FTWDT010.
25
26CONFIG_IMX_WATCHDOG
27 Available for i.mx31/35/5x/6x to service the watchdog. This is not
28 automatically set because some boards (vision2) still need to define
29 their own hw_watchdog_reset routine.