From 4a0123734f43acef97cf4e7e05ec33f530e2dbe5 Mon Sep 17 00:00:00 2001
From: Vishnu Santhosh <vishnu.santhosh@oss.qualcomm.com>
Date: Mon, 3 Aug 2026 16:56:33 +0530
Subject: arm64: dts: qcom: shikra: Add SMP2P nodes

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

Signed-off-by: Vishnu Santhosh <vishnu.santhosh@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260803-shikra-dt-m1-v7-4-7fec8e777076@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
 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 @@
 		};
 	};
 
+	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";
 
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