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author | Troy Kisky | 2012-10-22 10:19:01 -0500 |
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committer | Stefano Babic | 2013-01-13 04:39:57 -0600 |
commit | abbab70363dcdb270cbf24d47849214dd3a3e010 (patch) | |
tree | 2eb6f30be46ddc350e5635179dabdd126be2b0cd /doc | |
parent | 17c5ef20073c49ae1a10150b4194b25b6f1154fe (diff) | |
download | u-boot-abbab70363dcdb270cbf24d47849214dd3a3e010.tar.gz u-boot-abbab70363dcdb270cbf24d47849214dd3a3e010.tar.xz u-boot-abbab70363dcdb270cbf24d47849214dd3a3e010.zip |
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>
Diffstat (limited to 'doc')
-rw-r--r-- | doc/README.watchdog | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/doc/README.watchdog b/doc/README.watchdog new file mode 100644 index 0000000000..ee65008b4b --- /dev/null +++ b/doc/README.watchdog | |||
@@ -0,0 +1,29 @@ | |||
1 | Watchdog driver general info | ||
2 | |||
3 | CONFIG_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 | |||
12 | CONFIG_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 | |||
17 | CONFIG_AT91SAM9_WATCHDOG | ||
18 | Available for AT91SAM9 to service the watchdog. | ||
19 | |||
20 | CONFIG_FTWDT010_WATCHDOG | ||
21 | Available for FTWDT010 to service the watchdog. | ||
22 | |||
23 | CONFIG_FTWDT010_HW_TIMEOUT | ||
24 | Can be used to change the timeout for FTWDT010. | ||
25 | |||
26 | CONFIG_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. | ||