Re: [PATCH 4/5] MIPS: Alchemy: Use the GPIO watchdog driver on MTX-1

[Guenter Roeck]

On Fri, Oct 16, 2026 at 03:16:16PM -0700, Florian Fainelli wrote:
> The MTX-1 watchdog is serviced by toggling GPIO 215. Describe its toggle
> algorithm and 1.6-second minimum interval through the existing software
> node properties, and register gpio-wdt instead of mtx1-wdt.
> 
> The nominal 100-second circuit reset the test board about 82 seconds after
> starting an unclean-close test over the serial console. Allow for circuit
> tolerance and console transmission time with a conservative 70-second
> hardware service margin. Keep a 100-second initial userspace timeout and
> let the core schedule keepalives for the longer userspace timeout.
> 
> Mark the watchdog always-running so the core services it before userspace
> opens the device and after a clean stop, without trying to disable the
> hardware by tristating the GPIO. Enable GPIO_WATCHDOG in the MTX-1
> defconfig.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> Acked-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>

Applied.

Thanks,
Guenter