linux-kernel - Re: [PATCH v7 1/2] firmware: qcom: scm: Register gunyah watchdog device

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Message-ID: <tidx5vumsk2vnofoy6cp6unfn34kb4prmkh35xocbzafj55pxb@x2x5cqynofs6>
Date: Fri, 14 Nov 2025 13:10:26 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: hrishabh.rajput@....qualcomm.com
Cc: Bjorn Andersson <andersson@...nel.org>,
        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,
        Pavan Kondeti <pavan.kondeti@....qualcomm.com>,
        Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v7 1/2] firmware: qcom: scm: Register gunyah watchdog
 device

On Fri, Nov 14, 2025 at 07:57:09AM +0000, Hrishabh Rajput via B4 Relay wrote:
> From: Hrishabh Rajput <hrishabh.rajput@....qualcomm.com>
> 
> To restrict Gunyah watchdog initialization to Qualcomm platforms running
> under the Gunyah Hypervisor, register the watchdog device in the QCOM
> SCM driver.
> 
> When Gunyah is not present or Gunyah emulates MMIO-based watchdog, we
> expect Qualcomm watchdog or ARM SBSA watchdog device to be present in
> the devicetree. First, we make sure we're running under the Gunyah
> Hypervisor. Then we move to check if any of the above mentioned
> watchdog device nodes are present, if not then we proceed to register
> the SMC-based Gunyah watchdog device.
> 
> Signed-off-by: Hrishabh Rajput <hrishabh.rajput@....qualcomm.com>
> ---
>  drivers/firmware/qcom/qcom_scm.c | 53 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 53 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry