linux-kernel - [PATCH 3/3] arm64: dts: qcom: sc8280xp: Add SLPI

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Message-Id: <20250503-topic-8280_slpi-v1-3-9400a35574f7@oss.qualcomm.com>
Date: Sat, 03 May 2025 00:38:01 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
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: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH 3/3] arm64: dts: qcom: sc8280xp: Add SLPI

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

SC8280XP features a SLPI (Sensor Low Power Island) core. Describe it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 72 ++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index 3f9195da90ee898c68296f19dc55bcb3ac73fe29..75ec34bfa729946687c4c35aa9550685cac95a10 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -695,6 +695,11 @@ pil_adsp_mem: adsp-region@...00000 {
 			no-map;
 		};
 
+		pil_slpi_mem: slpi-region@...00000 {
+			reg = <0 0x88c00000 0 0x1500000>;
+			no-map;
+		};
+
 		pil_nsp0_mem: cdsp0-region@...00000 {
 			reg = <0 0x8a100000 0 0x1e00000>;
 			no-map;
@@ -783,6 +788,30 @@ smp2p_nsp1_in: slave-kernel {
 		};
 	};
 
+	smp2p-slpi {
+		compatible = "qcom,smp2p";
+		qcom,smem = <481>, <430>;
+		interrupts-extended = <&ipcc IPCC_CLIENT_SLPI
+					     IPCC_MPROC_SIGNAL_SMP2P
+					     IRQ_TYPE_EDGE_RISING>;
+		mboxes = <&ipcc IPCC_CLIENT_SLPI
+				IPCC_MPROC_SIGNAL_SMP2P>;
+
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <3>;
+
+		smp2p_slpi_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,smem-state-cells = <1>;
+		};
+
+		smp2p_slpi_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
+
 	soc: soc@0 {
 		compatible = "simple-bus";
 		#address-cells = <2>;
@@ -2454,6 +2483,49 @@ tcsr: syscon@...0000 {
 			reg = <0x0 0x01fc0000 0x0 0x30000>;
 		};
 
+		remoteproc_slpi: remoteproc@...0000 {
+			compatible = "qcom,sc8280xp-slpi-pas", "qcom,sm8350-slpi-pas";
+			reg = <0 0x02400000 0 0x10000>;
+
+			interrupts-extended = <&pdc 9 IRQ_TYPE_EDGE_RISING>,
+					      <&smp2p_slpi_in 0 IRQ_TYPE_EDGE_RISING>,
+					      <&smp2p_slpi_in 1 IRQ_TYPE_EDGE_RISING>,
+					      <&smp2p_slpi_in 2 IRQ_TYPE_EDGE_RISING>,
+					      <&smp2p_slpi_in 3 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "wdog",
+					  "fatal",
+					  "ready",
+					  "handover",
+					  "stop-ack";
+
+			clocks = <&rpmhcc RPMH_CXO_CLK>;
+			clock-names = "xo";
+
+			power-domains = <&rpmhpd SC8280XP_LCX>,
+					<&rpmhpd SC8280XP_LMX>;
+			power-domain-names = "lcx", "lmx";
+
+			memory-region = <&pil_slpi_mem>;
+
+			qcom,qmp = <&aoss_qmp>;
+
+			qcom,smem-states = <&smp2p_slpi_out 0>;
+			qcom,smem-state-names = "stop";
+
+			status = "disabled";
+
+			glink-edge {
+				interrupts-extended = <&ipcc IPCC_CLIENT_SLPI
+							IPCC_MPROC_SIGNAL_GLINK_QMP
+							IRQ_TYPE_EDGE_RISING>;
+				mboxes = <&ipcc IPCC_CLIENT_SLPI
+						IPCC_MPROC_SIGNAL_GLINK_QMP>;
+
+				label = "slpi";
+				qcom,remote-pid = <3>;
+			};
+		};
+
 		remoteproc_adsp: remoteproc@...0000 {
 			compatible = "qcom,sc8280xp-adsp-pas";
 			reg = <0 0x03000000 0 0x10000>;

-- 
2.49.0