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

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Message-ID: <20250507-add_qcs615_remoteproc_support-v2-4-52ac6cb43a39@quicinc.com>
Date: Wed, 7 May 2025 18:26:14 +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 v2 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 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>;
+			ranges = <0 0 0x146aa000 0x1000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			pil-reloc@94c {
+				compatible = "qcom,pil-reloc-info";
+				reg = <0x94c 0xc8>;
+			};
+		};
+
 		apps_smmu: iommu@...00000 {
 			compatible = "qcom,qcs615-smmu-500", "qcom,smmu-500", "arm,mmu-500";
 			reg = <0x0 0x15000000 0x0 0x80000>;

-- 
2.46.0