linux-kernel - [PATCH v4 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info region

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Message-ID: <20250526-add_qcs615_remoteproc_support-v4-4-06a7d8bed0b5@quicinc.com>
Date: Mon, 26 May 2025 13:21:50 +0800
From: Lijuan Gao <quic_lijuang@...cinc.com>
To: 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>, Lijuan Gao <quic_lijuang@...cinc.com>,
        "Konrad Dybcio" <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v4 4/6] arm64: dts: qcom: qcs615: Add IMEM and PIL info
 region

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.

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
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 3f1f674884e5e9b3b01ec75bcea11d9c2ea6355c..9220d6727136b34fa42b5eeb3eb00938d21a5adf 100644
--- a/arch/arm64/boot/dts/qcom/qcs615.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcs615.dtsi
@@ -3289,6 +3289,20 @@ sram@...0000 {
 			reg = <0x0 0x0c3f0000 0x0 0x400>;
 		};
 
+		sram@...80000 {
+			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>;

-- 
2.34.1