Re: [PATCH v9 0/5] Add support to read the watchdog bootstatus from IMEM

[Kathiravan Thirumoorthy]

On 3/16/2026 2:36 PM, Kathiravan Thirumoorthy wrote:
> On 2/28/2026 5:58 PM, Kathiravan Thirumoorthy wrote:
> > In Qualcomm IPQ SoCs, if the system is rebooted due to the watchdog
> > timeout, there is no way to identify it. Current approach of checking
> > the EXPIRED_STATUS in WDT_STS is not working.
> >
> > To achieve this, if the system is rebooted due to watchdog timeout, the
> > information is captured in the IMEM by the bootloader (along with other
> > reason codes as well).
> >
> > This series attempts to address this by adding the support to read the
> > IMEM and populate the information via bootstatus sysfs file.
> >
> > With the CONFIG_WATCHDOG_SYSFS enabled, user can extract the information
> > as below:
> >
> > cat
> > /sys/devices/platform/soc@0/f410000.watchdog/watchdog/watchdog0/bootstatus 
> >
> > 32
> >
> > Signed-off-by: Kathiravan Thirumoorthy 
> > <kathiravan.thirumoorthy@xxxxxxxxxxxxxxxx>
>
> Gentle Reminder on this series. If there are no further comments, can 
> this be picked up for v7.1? 

Bjorn, Guenter, Wim — gentle ping. FWIW, this series applies cleanly to 
the next-20260327 tag. Please let me know if any improvements are required.