[PATCH RESEND v7 04/10] arm64: dts: qcom: shikra: Add SMP2P nodes

Komal Bajaj <[email protected]> Mon, 03 Aug 2026 16:56:33 +0530
Newsgroups org.kernel.vger.dmaengine,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pm
Message-ID <[email protected]>
From: Vishnu Santhosh <[email protected]>

Add SMP2P nodes for the cdsp, modem and lmcu subsystems to enable
inter-processor signalling for remoteproc state management.

Signed-off-by: Vishnu Santhosh <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Signed-off-by: Komal Bajaj <[email protected]>
---
 arch/arm64/boot/dts/qcom/shikra.dtsi | 69 ++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra.dtsi b/arch/arm64/boot/dts/qcom/shikra.dtsi
index a01e26d9ee6d..42a17ffc040f 100644
--- a/arch/arm64/boot/dts/qcom/shikra.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra.dtsi
@@ -428,6 +428,75 @@ lmcu_dtb_mem: lmcu-dtb@b4702000 {
 		};
 	};
 
+	smp2p-cdsp {
+		compatible = "qcom,smp2p";
+		qcom,smem = <94>, <432>;
+
+		interrupts = <GIC_SPI 263 IRQ_TYPE_EDGE_RISING 0>;
+
+		mboxes = <&apcs_glb 6>;
+
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <5>;
+
+		cdsp_smp2p_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,smem-state-cells = <1>;
+		};
+
+		cdsp_smp2p_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
+
+	smp2p-lmcu {
+		compatible = "qcom,smp2p";
+		qcom,smem = <617>, <616>;
+
+		interrupts = <GIC_SPI 287 IRQ_TYPE_EDGE_RISING 0>;
+
+		mboxes = <&apcs_glb 10>;
+
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <26>;
+
+		lmcu_smp2p_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,smem-state-cells = <1>;
+		};
+
+		lmcu_smp2p_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
+
+	smp2p-mpss {
+		compatible = "qcom,smp2p";
+		qcom,smem = <435>, <428>;
+
+		interrupts = <GIC_SPI 70 IRQ_TYPE_EDGE_RISING 0>;
+
+		mboxes = <&apcs_glb 14>;
+
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <1>;
+
+		modem_smp2p_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,smem-state-cells = <1>;
+		};
+
+		modem_smp2p_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+	};
+
 	soc: soc@0 {
 		compatible = "simple-bus";
 

-- 
2.34.1