linux-kernel - Re: [PATCH v1 5/5] arm64: dts: qcom: sm8250: Add memory dump node

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Date:   Mon, 23 Oct 2023 11:33:02 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Zhenhua Huang <quic_zhenhuah@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...cinc.com,
        quic_tingweiz@...cinc.com
Subject: Re: [PATCH v1 5/5] arm64: dts: qcom: sm8250: Add memory dump node

On 23/10/2023 11:20, Zhenhua Huang wrote:
> Add device node for memory dump on sm8250. Usage of memory dump
> is to populate configuration in reserved memory, allowing
> firmware to do the dump accordingly.
> 
> Signed-off-by: Zhenhua Huang <quic_zhenhuah@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index a4e58ad..d379524 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -674,6 +674,11 @@
>  		reg = <0x0 0x80000000 0x0 0x0>;
>  	};
>  
> +	mem-dump {
> +		compatible = "qcom,mem-dump";

Sorry, this is not a hardware.

> +		memory-region = <&dump_mem>;
> +	};
Best regards,
Krzysztof