Subject: Re: [11/12] watchdog: sp5100-tco: Abort if watchdog is disabled by
 hardware
To: Guenter Roeck <linux@roeck-us.net>, Lyude Paul <lyude@redhat.com>
Cc: Wim Van Sebroeck <wim@iguana.be>, linux-watchdog@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        =?UTF-8?B?Wm9sdMOhbiBCw7ZzesO2cm3DqW55aQ==?= <zboszor@pr.hu>
References: <1514149457-20273-12-git-send-email-linux@roeck-us.net>
 <1515538687.4373.18.camel@redhat.com> <20180109233703.GD26819@roeck-us.net>
From: Gabriel C <nix.or.die@gmail.com>
Message-ID: <4b56f6ba-bf76-a500-087a-49f34cd4b5d5@gmail.com>
Date: Wed, 10 Jan 2018 00:58:00 +0100
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On 10.01.2018 00:37, Guenter Roeck wrote:
> Hi,
> 
> On Tue, Jan 09, 2018 at 05:58:07PM -0500, Lyude Paul wrote:
>> Hi! I'm the one from the Fedora bugzilla who said they'd help review these
>> patches. I might end up responding to this with a real review comment after
>> this message, but first:
>>
>> mind cc'ing me future versions of this patchset and also, is there any way you
> 
> Sure.
> 
>> know of that one could figure out whether or not the sp5100_tco wdt is
>> actually disabled by the OEM on a board? I tried testing these patches with my
> 
> That is what the code is trying to do today.
> 
>> system and it appears to be convinced that it's disabled on my system, but I'm
>> hoping something in this patch is just broken…
>>
> 
> I tested the driver on three different boards. MSI B350M MORTAR,
> MSI B350 TOMAHAWK, and Gigabyte AB350M-Gaming 3. CPU is Ryzen 1700X
> on all boards.
> 
> On the MSI boards, the watchdog is reported as disabled. Enabling it
> and letting it expire does not have an effect. I am using the Super-IO
> watchdog instead on those boards (and it works).
> 
> On the Gigabyte board, the watchdog is reported as enabled, and it works
> (and the watchdog on the Super-IO chips does not work).
> 
> Feel free to play with the driver. Maybe there is a means to enable the
> watchdog if it is disabled. Unfortunately, I was unable to figure out how
> to do it, so I thought it is better to report the fact and not instantiate
> the watchdog if it doesn't work.
> 

I haven an Supemricro H11DSi-NT with EPYCs CPUs..
I can set the watchdog ON/OFF in BIOS and also set in to reset or NMI
with the moatherboard jumpers.

If you want I can give whatever patches for this driver an try ,
just let me know.

Regards,

Gabriel C