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

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Message-ID: <20250516-add_qcs615_remoteproc_support-v3-4-ad12ceeafdd0@quicinc.com>
Date: Fri, 16 May 2025 11:27:05 +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>
Subject: [PATCH v3 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.

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 {
+			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