linux-kernel - Re: [PATCH v2 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info region

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Message-ID: <64893588-544f-4cb0-8c0b-7eef588468d5@oss.qualcomm.com>
Date: Thu, 8 May 2025 16:41:24 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Lijuan Gao <quic_lijuang@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: kernel@...cinc.com, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info
 region

On 5/7/25 12:26 PM, Lijuan Gao wrote:
> Add a simple-mfd representing IMEM on QCS615 and define the PIL
> relocation info region as its child. The PIL region in IMEM is used to
> communicate load addresses of remoteproc to post mortem debug tools, so
> that these tools can collect ramdumps.
> 
> Signed-off-by: Lijuan Gao <quic_lijuang@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs615.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs615.dtsi b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> index 53661e3a852e..fefdb0fd66f7 100644
> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> @@ -3266,6 +3266,20 @@ sram@...0000 {
>  			reg = <0x0 0x0c3f0000 0x0 0x400>;
>  		};
>  
> +		sram@...aa000 {
> +			compatible = "qcom,qcs615-imem", "syscon", "simple-mfd";
> +			reg = <0x0 0x146aa000 0x0 0x1000>;

0x14680000 0x2c000