[U-Boot] Coldfire: MCF5271: Periodic HW watchdog petting and sleep function does not work.

[TC Liew]

Richard,

Can you be more specific on how the MAX6369 WDO and WDI connects to
MCF5271's signal? Is it GPIO? ResetIn? Others?

Regards,
TsiChung

On Mon, Mar 2, 2009 at 3:05 PM, Richard Retanubun <
RichardRetanubun at ruggedcom.com> wrote:

> Hi Guys,
>
> I am using u-boot 2009.03-rc1 and a board based on Coldfire MC5271EVB eval
> platform.
> Our external watchdog is a MAX6369.
>
> I have #define CONFIG_HW_WATCHDOG and #undef CONFIG_WATCHDOG in our board's
> config file and
> have created the hw_watchdog_reset function to toggle the WDI line to pet
> the watchdog.
>
> However, my board keeps resetting at the watchdog timeout. Upon probing, I
> found out that
> the watchdog toggle line in not being toggled periodically by u-boot. Which
> means a regular call
> to WATCHDOG_RESET() is not happening. If I execute commands, the WDI will
> get toggled and the watchdog
> will not timeout, which means that the WATCHDOG_RESET() mapping to
> hw_watchdog_reset function is working, it is
> just not being called periodically.
>
> I am looking at the programmable interrupt timer that the get_timer()
> function uses, and so far everything checks out.
>
> I'm also stuck at using u-boot's sleep command, e.g. "sleep 1" will never
> return. Which I suspect may be the same root cause.
> (this can also be observed on the M5271EVB board).
>
> What am I missing here?
>
> Thank you for all your time.
>
> Regards,
>
> - Richard Retanubun.
>
>
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