linux-kernel - Re: [PATCH v3 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info region

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Message-ID: <0097b07c-3a58-4b28-abca-3e6de70ecf25@oss.qualcomm.com>
Date: Fri, 16 May 2025 11:45:03 +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 v3 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info
 region

On 5/16/25 5:27 AM, 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 f922349758d11ec7fda1c43736a4bf290916e67f..dd54cfe7b7a6f03c1aa658ce3014d50478df5931 100644
> --- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
> @@ -3290,6 +3290,20 @@ sram@...0000 {
>  			reg = <0x0 0x0c3f0000 0x0 0x400>;
>  		};
>  
> +		sram@...aa000 {

Please also update this unit address

with that

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

Konrad

> +			compatible = "qcom,qcs615-imem", "syscon", "simple-mfd";
> +			reg = <0x0 0x14680000 0x0 0x2c000>;
> +			ranges = <0 0 0x14680000 0x2c000>;
> +
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			pil-reloc@...4c {
> +				compatible = "qcom,pil-reloc-info";
> +				reg = <0x2a94c 0xc8>;
> +			};
> +		};
> +
>  		apps_smmu: iommu@...00000 {
>  			compatible = "qcom,qcs615-smmu-500", "qcom,smmu-500", "arm,mmu-500";
>  			reg = <0x0 0x15000000 0x0 0x80000>;
>