Re: [PATCH v2] clocksource: timer-tegra186: Enable WDT at probe

[Jon Hunter <jonathanh@nvidia.com>]

On 07/07/2025 10:51, Daniel Lezcano wrote:
> On Thu, Jul 03, 2025 at 04:34:15PM +0530, Kartik Rajput wrote:
>> Currently, if the system crashes or hangs during kernel boot before
>> userspace initializes and configures the watchdog timer, then the
>> watchdog won’t be able to recover the system as it’s not running. This
>> becomes crucial during an over-the-air update, where if the newly
>> updated kernel crashes on boot, the watchdog is needed to reset the
>> device and boot into an alternative system partition. If the watchdog
>> is disabled in such scenarios, it can lead to the system getting
>> bricked.
>>
>> Enable the WDT during driver probe to allow recovery from any crash/hang
>> seen during early kernel boot. Also, disable interrupts once userspace
>> starts pinging the watchdog.
> 
> Please resend with proper recipients (linux-watchdog@, Wim Van
> Sebroeck, Guenter Roeck) and the changelog.

ACK.

> Can someone take the opportunity to split this watchdog code and move
> it in the proper watchdog drivers directory ?

I understand that this was mentioned before, but Thierry previously 
objected to this for this particular driver [0].

Cheers,
Jon

[0] 
https://lore.kernel.org/linux-tegra/4ks74upuufmt2ibh5ur5zpazvfj66ak4gyq7v4rtz2zi2u5wsi@rls64ws3rukp/

-- 
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