linux-kernel - Re: [PATCH v6 5/5] arm64: dts: qcom: ipq5424: add support to get watchdog bootstatus from IMEM

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Message-ID: <5zqxloovexknbuhknbafc2trf66d6zwtvtkhjbchmbndxg2j6u@3giwqjkd2vl7>
Date: Sat, 31 Jan 2026 10:18:29 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@....qualcomm.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rajendra Nayak <quic_rjendra@...cinc.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org
Subject: Re: [PATCH v6 5/5] arm64: dts: qcom: ipq5424: add support to get
 watchdog bootstatus from IMEM

On Fri, Jan 30, 2026 at 04:14:34PM +0530, Kathiravan Thirumoorthy wrote:
> Add the "sram" property to the watchdog device node to enable
> retrieval of the system restart reason from IMEM, populated by XBL.
> Parse this information in the watchdog driver and update the bootstatus
> sysFS if the restart was triggered by a watchdog timeout.
> 
> Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@....qualcomm.com>
> ---
> Changes in v6:
> 	- Update the 'sram' property to point to the SRAM region
> Changes in v5:
> 	- Rename the property 'qcom,imem' to 'sram'
> Changes in v4:
> 	- New patch
> ---
>  arch/arm64/boot/dts/qcom/ipq5424.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
> 

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


-- 
With best wishes
Dmitry