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== Watchdog timers on OMAP3 boards ==
(Work in progress)
=== Overview of this article ===
There is a set of [[Wiki contribution guidelines]].
=== OMAP3 watchdog overview === There are 3 watch dogs WD1=Secure, WD2=MPU, WD3=IVA. WD1 is either taken care of by ROM (HS/EMU) or not accessible (GP). We need to take care of WD2-MPU or take a PRCM reset. WD3 should not be running and does not generate a PRCM reset. === Watchdog timers under x-loader === ... === Watchdog timers under u-boot === ... === Watchdog timers under Linux kernel === * [http://www.kernel.org/doc/Documentation/watchdog/watchdog-api.txt Linux Watchdog driver API.]* [http://www.kernel.org/doc/Documentation/watchdog/src Watchdog related example programs.] $ modprobe omap_wdt OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec If enable and tick the watchdog card $ watchdog-test -e; watchdog-test Watchdog card enabled. Watchdog Ticking Away! after 60 sec NOT resets. If enable and not tick the watchdog card. $ watchdog-test -e Watchdog card enabled. Watchdog Ticking Away! after 60 sec resets. If disable the watchdog card. $watchdo-test -d Watchdog card disabled. after 60 sec NOT resets unless NOWAYOUT is defined (CONFIG_WATCHDOG_NOWAYOUT)