Re: [PATCH 0/3] watchdog: omap: Preserve OMAP watchdog across boot to detect faulty boots

[Guenter Roeck]

On 9/11/26 02:17, Diogo Ivo wrote:
> Allow the OMAP watchdog to survive being stopped on kernel initialization
> so it can detect a faulty boot in cases where the bootloader leaves it
> running and the watchdog driver picks it up during kernel init.
>
> - Patch 1 removes a duplicate omap_wdt_start() call left behind by
> cd004d8299f1 ("watchdog: Fix OMAP watchdog early handling"). This is
> unrelated to the main goal of the series and can be picked up
> independently.
>
> - Patch 2 adds support for reading the watchdog boot status. Probe now
> checks whether the watchdog is already running and takes it over instead
> of blindly stopping it based on early_enable alone. This introduces a
> regression possibility, explained in detail in the patch's message.
>
> - Patch 3 marks the OMAP4 watchdog node ti,no-reset-on-init so the
> ti-sysc driver stops resetting it. A detailed explaination of why is
> also provided in the commit message of the patch.
>
> This series has been tested on a platform based on the VAR-SOM-OM44 from
> Variscite, running a TI OMAP4460 SoC.
Please address the issues reported by Sashiko, or explain why they don't apply.

Thanks,
Guenter