Re: [U-Boot] u-boot and watchdogs

Dear "Dexdyne Postmaster",

In message <memo.20090811100117.12188C@postmaster+dexdyne.com.cix.co.uk> you wrote:

Our hardware has a watchdog which has a maximum period of 1 second.

Once I've got Linux up and going I can handle that.

I'd love to have a watchdog so that if Linux doesn't take over, the board will reset and try again.

Is there any experience/example of u-boot driving a short-period watchdog throughout the boot process I can try to copy?

Yes, that's a standard feature used by many boards. Worst case is a 80 millisecond timeout with a tolerance of +/- 20 millisec.

Best regards,

Wolfgang Denk