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

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Message-ID: <20260113174642.eba7zkptqnmrp6nm@hu-mojha-hyd.qualcomm.com>
Date: Tue, 13 Jan 2026 23:16:42 +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 04:55:56PM +0000, Alexander Koskovich wrote:
> 
> 
> On Tuesday, January 13th, 2026 at 11:47 AM, Mukesh Ojha <mukesh.ojha@....qualcomm.com> wrote:
> 
> > Just to clarify you said, there is no issue if you just use dtb and not use dtbo ?
> > And issue happen when you start using a dtbo, even a dummy one, right ?
> 
> Yeah, the cases are as follows:
> 
> dtb only (no arch_timer label) = boots
> dtb (no arch_timer label) + dtbo = fails
> dtb (has arch_timer label) + dtbo = boots

Yes, this is expected..some nodes in dtb is expected which
gets patched during boot up.

https://gitlab.incom.co/cm-ayn/android_kernel_ayn_kernel/-/commit/7ae6565108654991aaac9b73a2221509511e59d3

One of the reason, you will see below change to fix one of the expected
name qcom_scm in the downstream.

https://lore.kernel.org/lkml/20251217-multi_waitq_scm-v11-1-f21e50e792b8@oss.qualcomm.com/

> 
> Alex

-- 
-Mukesh Ojha