diff --git a/qcom/qcs405.dtsi b/qcom/qcs405.dtsi
index 10ff3f6bab3b..e09e9755db17 100644
--- a/qcom/qcs405.dtsi
+++ b/qcom/qcs405.dtsi
@@ -280,6 +280,183 @@
 			reg = <0x6d0 0xc>;
 		};
 	};
+
+	tcsr_mutex_block: syscon@1905000 {
+		compatible = "syscon";
+		reg = <0x1905000 0x20000>;
+	};
+
+	tcsr_mutex: hwlock {
+		compatible = "qcom,tcsr-mutex";
+		syscon = <&tcsr_mutex_block 0 0x1000>;
+		#hwlock-cells = <1>;
+	};
+
+	smem: qcom,smem {
+		compatible = "qcom,smem";
+		memory-region = <&smem_region>;
+		hwlocks = <&tcsr_mutex 3>;
+	};
+
+	apcs: syscon@b011008 {
+		compatible = "syscon";
+		reg = <0xb011008 0x4>;
+	};
+
+	apcs_glb: mailbox@b011000 {
+		compatible = "qcom,msm8916-apcs-kpss-global";
+		reg = <0xb011000 0x10>;
+
+		#mbox-cells = <1>;
+	};
+
+	smp2p_sleepstate: qcom,smp2p_sleepstate {
+		compatible = "qcom,smp2p-sleepstate";
+		qcom,smem-states = <&sleepstate_smp2p_out 0>;
+	};
+
+	rpm_msg_ram: memory@60000 {
+		compatible = "qcom,rpm-msg-ram";
+		reg = <0x60000 0x6000>;
+	};
+
+	rpm-glink {
+		compatible = "qcom,glink-rpm";
+		interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+		qcom,rpm-msg-ram = <&rpm_msg_ram>;
+		mboxes = <&apcs_glb 0>;
+
+		qcom,rpm_glink_ssr {
+			qcom,glink-channels = "glink_ssr";
+			qcom,notify-edges = <&glink_adsp>,
+					    <&glink_cdsp>;
+		};
+	};
+
+	qcom,glink {
+		compatible = "qcom,glink";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		glink_adsp: adsp {
+			qcom,remote-pid = <2>;
+			transport = "smem";
+			mboxes = <&apcs_glb 8>;
+			mbox-names = "adsp_smem";
+			interrupts = <GIC_SPI 289 IRQ_TYPE_EDGE_RISING>;
+
+			label = "adsp";
+			qcom,glink-label = "lpass";
+
+			qcom,adsp_qrtr {
+				qcom,glink-channels = "IPCRTR";
+				qcom,intents = <0x800  5
+						0x2000 3
+						0x4400 2>;
+			};
+
+			qcom,apr_tal_rpmsg {
+				qcom,glink-channels = "apr_audio_svc";
+				qcom,intents = <0x200 20>;
+			};
+
+			qcom,msm_fastrpc_rpmsg {
+				compatible = "qcom,msm-fastrpc-rpmsg";
+				qcom,glink-channels = "fastrpcglink-apps-dsp";
+				qcom,intents = <0x64 64>;
+			};
+
+			qcom,adsp_glink_ssr {
+				qcom,glink-channels = "glink_ssr";
+				qcom,notify-edges = <&glink_cdsp>;
+			};
+		};
+
+		glink_cdsp: cdsp {
+			qcom,remote-pid = <5>;
+			transport = "smem";
+			mboxes = <&apcs_glb 12>;
+			mbox-names = "cdsp_smem";
+			interrupts = <GIC_SPI 141 IRQ_TYPE_EDGE_RISING>;
+
+			label = "cdsp";
+			qcom,glink-label = "cdsp";
+
+			qcom,cdsp_qrtr {
+				qcom,glink-channels = "IPCRTR";
+				qcom,intents = <0x800  5
+						0x2000 3
+						0x4400 2>;
+			};
+
+			qcom,msm_fastrpc_rpmsg {
+				compatible = "qcom,msm-fastrpc-rpmsg";
+				qcom,glink-channels = "fastrpcglink-apps-dsp";
+				qcom,intents = <0x64 64>;
+			};
+
+			qcom,cdsp_glink_ssr {
+				qcom,glink-channels = "glink_ssr";
+				qcom,notify-edges = <&glink_adsp>;
+			};
+		};
+	};
+
+	qcom,glinkpkt {
+		compatible = "qcom,glinkpkt";
+
+		qcom,glinkpkt-apr-apps2 {
+			qcom,glinkpkt-edge = "adsp";
+			qcom,glinkpkt-ch-name = "apr_apps2";
+			qcom,glinkpkt-dev-name = "apr_apps2";
+		};
+	};
+
+	qcom,smp2p-adsp {
+		compatible = "qcom,smp2p";
+		qcom,smem = <443>, <429>;
+		interrupts = <GIC_SPI 291 IRQ_TYPE_EDGE_RISING>;
+		qcom,ipc = <&apcs 0 10>;
+		qcom,local-pid = <0>;
+		qcom,remote-pid = <2>;
+
+		adsp_smp2p_out: master-kernel {
+			qcom,entry-name = "master-kernel";
+			#qcom,smem-state-cells = <1>;
+		};
+
+		adsp_smp2p_in: slave-kernel {
+			qcom,entry-name = "slave-kernel";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		sleepstate_smp2p_out: sleepstate-out {
+			qcom,entry-name = "sleepstate";
+			#qcom,smem-state-cells = <1>;
+		};
+	};
+
+	qcom,smp2p-cdsp {
+		compatible = "qcom,smp2p";
+		qcom,smem = <94>, <432>;
+		interrupts = <GIC_SPI 143 IRQ_TYPE_EDGE_RISING>;
+		qcom,ipc = <&apcs 0 14>;
+		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>;
+		};
+	};
 };
 
 #include "qcs405-pinctrl.dtsi"