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Watchdog on STG-212 (OX820)

Posted by kralan 
Watchdog on STG-212 (OX820)
February 24, 2019 06:49AM
I'd like to use a watchdog on my MEDION P89626 but cannot find a device in /dev.
There is a reference to a watchdog device in ox820-stg212.dtb.
Can this be accessed by a watchdog service or should I compile a software watchdog into the kernel?

regards
kralan
Re: Watchdog on STG-212 (OX820)
February 26, 2019 03:24PM
kralan Wrote:
-------------------------------------------------------
> I'd like to use a watchdog on my MEDION P89626 but
> cannot find a device in /dev.
> There is a reference to a watchdog device in
> ox820-stg212.dtb.
> Can this be accessed by a watchdog service or
> should I compile a software watchdog into the
> kernel?
>
> regards
> kralan

I don't think we have hardware watchdog (or know how to turn it on if there were). So SW watchdog is what you want if needed.

-bodhi
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Re: Watchdog on STG-212 (OX820)
February 27, 2019 08:33AM
Yes, I will go for the software watchdog.

Here is what I found out about the hardware watchdog for reference:

The device tree in ox820-stg212.dtb references a mpcore_wdt device:
        watchdog@47000620 {
                compatible = "mpcore_wdt";
                reg = <0x47000620 0x20>;
                interrupts = <0x1 0xe 0x304>;
                clocks = <0x8>;
        };

but there is no corresponding driver in the kernel (anymore).
It would seem it got removed in Linux 3.11
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