summaryrefslogtreecommitdiff
path: root/doc
diff options
context:
space:
mode:
authorTroy Kisky <troy.kisky@boundarydevices.com>2012-10-22 15:19:01 +0000
committerStefano Babic <sbabic@denx.de>2013-01-13 11:39:57 +0100
commitabbab70363dcdb270cbf24d47849214dd3a3e010 (patch)
tree2eb6f30be46ddc350e5635179dabdd126be2b0cd /doc
parent17c5ef20073c49ae1a10150b4194b25b6f1154fe (diff)
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.watchdog29
1 files changed, 29 insertions, 0 deletions
diff --git a/doc/README.watchdog b/doc/README.watchdog
new file mode 100644
index 00000000000..ee65008b4be
--- /dev/null
+++ b/doc/README.watchdog
@@ -0,0 +1,29 @@
+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.