linux-kernel - Re: [PATCH] arm64: dts: qcom: qcm2290: Add TCSR download mode address

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Message-ID: <a58eb607-74e5-4f31-8ea2-b38ebbca5344@oss.qualcomm.com>
Date: Wed, 30 Jul 2025 15:24:29 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Sumit Garg <sumit.garg@...nel.org>, linux-arm-msm@...r.kernel.org
Cc: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Sumit Garg <sumit.garg@....qualcomm.com>
Subject: Re: [PATCH] arm64: dts: qcom: qcm2290: Add TCSR download mode address

On 7/30/25 3:22 PM, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg@....qualcomm.com>
> 
> Allow configuration of download mode via qcom_scm driver via specifying
> download mode register address in the TCSR space. It is especially useful
> for a clean watchdog reset without entry into download mode.
> 
> The problem remained un-noticed until now since error reporting for
> missing download mode configuration feature was explicitly suppressed.
> 
> Signed-off-by: Sumit Garg <sumit.garg@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/qcm2290.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcm2290.dtsi b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
> index f49ac1c1f8a3..08eadec59882 100644
> --- a/arch/arm64/boot/dts/qcom/qcm2290.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
> @@ -154,6 +154,7 @@ scm: scm {
>  			compatible = "qcom,scm-qcm2290", "qcom,scm";
>  			clocks = <&rpmcc RPM_SMD_CE1_CLK>;
>  			clock-names = "core";
> +			qcom,dload-mode = <&tcsr_regs 0x13000>;

Can confirm it's the right addr

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Konrad