linux-kernel - Re: [PATCH 0/2] Add support for Gunyah Watchdog

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Message-ID: <20260113155821.7iesxxuf74ncr7ue@hu-mojha-hyd.qualcomm.com>
Date: Tue, 13 Jan 2026 21:28:21 +0530
From: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
To: Alexander Koskovich <AKoskovich@...me>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Pavan Kondeti <pavan.kondeti@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        hrishabh.rajput@....qualcomm.com,
        Konrad Dybcio <konradybcio@...nel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Add support for Gunyah Watchdog

On Tue, Jan 13, 2026 at 03:07:20PM +0000, Alexander Koskovich wrote:
> On Tuesday, January 13th, 2026 at 9:50 AM, Konrad Dybcio <konrad.dybcio@....qualcomm.com> wrote:
> 
> > What I had in mind is that with the sources you can track down where
> > the issue comes from with a fair degree of confidence.. if that's a
> > Fairphone-specific issue, maybe you could prettyplease ask these folks
> > for a BL update somewhere down the line
> > 
> > If you still come to a conclusion that the hyp is wrong, we can accept
> > that workaround..
> 
> To clarify the device I'm seeing the issue on is the Nothing Phone 3a which is another milos device.
> 
> Not sure if this affects the FP6 as well but issue was also seen on an 8550 platform, so seems to have the potential to affect anything 8550+ at least:
> https://gitlab.incom.co/cm-ayn/android_kernel_ayn_kernel/-/commit/7ae6565108654991aaac9b73a2221509511e59d3
> 
> It's not that I think hyp is wrong, what I'm guessing is it's a bug in bootloader exposed by a change in hyp dtb (since it doesn't affect blair on same abl tag). If that's the case is it still acceptable to workaround?

Are you trying to modify hyp dtb here ? how ?

blair is very old SoC and may not be running with Gunyah at all.

> 
> For the majority of devices on the market you can't really update bootloader, it's signed by the OEM and sending a support ticket about it probably won't go anywhere since it doesn't affect downstream (since it has the label).
> 
> Thanks,
> Alex

-- 
-Mukesh Ojha