diff --git a/qcom/sdxpinn-rumi.dtsi b/qcom/sdxpinn-rumi.dtsi
index 1d95e9ef..b4e80013 100644
--- a/qcom/sdxpinn-rumi.dtsi
+++ b/qcom/sdxpinn-rumi.dtsi
@@ -9,3 +9,23 @@
 &qupv3_se1_2uart {
 	qcom,rumi_platform;
 };
+
+&SILVER_OFF {
+	status = "nok";
+};
+
+&SILVER_RAIL_OFF {
+	status = "nok";
+};
+
+&CLUSTER_PWR_DN {
+	status = "nok";
+};
+
+&CX_RET {
+	status = "nok";
+};
+
+&APSS_OFF {
+	status = "nok";
+};
diff --git a/qcom/sdxpinn.dtsi b/qcom/sdxpinn.dtsi
index f537e55f..222e0a40 100644
--- a/qcom/sdxpinn.dtsi
+++ b/qcom/sdxpinn.dtsi
@@ -30,7 +30,10 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x0>;
-			enable-method = "spin-table";
+			enable-method = "psci";
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+			power-domains = <&CPU_PD0>;
+			power-domain-names = "psci";
 			cpu-release-addr = <0x0 0x90f00000>;
 			next-level-cache = <&L2_0>;
 			L2_0: l2-cache {
@@ -49,7 +52,10 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x100>;
-			enable-method = "spin-table";
+			enable-method = "psci";
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+			power-domains = <&CPU_PD1>;
+			power-domain-names = "psci";
 			cpu-release-addr = <0x0 0x90f00000>;
 
 			L2_1: l2-cache {
@@ -63,7 +69,10 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x200>;
-			enable-method = "spin-table";
+			enable-method = "psci";
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+			power-domains = <&CPU_PD2>;
+			power-domain-names = "psci";
 			cpu-release-addr = <0x0 0x90f00000>;
 
 			L2_2: l2-cache {
@@ -77,7 +86,10 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a55";
 			reg = <0x0 0x300>;
-			enable-method = "spin-table";
+			enable-method = "psci";
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+			power-domains = <&CPU_PD3>;
+			power-domain-names = "psci";
 			cpu-release-addr = <0x0 0x90f00000>;
 
 			L2_3: l2-cache {
@@ -109,6 +121,57 @@
 		};
 	};
 
+	idle-states {
+		entry-method = "psci";
+
+		SILVER_OFF: silver-c3 { /* C3 */
+			compatible = "arm,idle-state";
+			idle-state-name = "pc";
+			entry-latency-us = <235>;
+			exit-latency-us = <428>;
+			min-residency-us = <1774>;
+			arm,psci-suspend-param = <0x40000003>;
+			local-timer-stop;
+		};
+
+		SILVER_RAIL_OFF: silver-c4 { /* C4 */
+			compatible = "arm,idle-state";
+			idle-state-name = "rail-pc";
+			entry-latency-us = <800>;
+			exit-latency-us = <750>;
+			min-residency-us = <4090>;
+			arm,psci-suspend-param = <0x40000004>;
+			local-timer-stop;
+		};
+
+		CLUSTER_PWR_DN: cluster-d4 { /* D4 */
+			compatible = "domain-idle-state";
+			idle-state-name = "l3-off";
+			entry-latency-us = <1050>;
+			exit-latency-us = <2500>;
+			min-residency-us = <5309>;
+			arm,psci-suspend-param = <0x41000044>;
+		};
+
+		CX_RET: cx-ret { /* Cx Ret */
+			compatible = "domain-idle-state";
+			idle-state-name = "cx-ret";
+			entry-latency-us = <2761>;
+			exit-latency-us = <3964>;
+			min-residency-us = <8467>;
+			arm,psci-suspend-param = <0x41001344>;
+		};
+
+		APSS_OFF: cluster-e3 { /* E3 */
+			compatible = "domain-idle-state";
+			idle-state-name = "llcc-off";
+			entry-latency-us = <2793>;
+			exit-latency-us = <4023>;
+			min-residency-us = <9826>;
+			arm,psci-suspend-param = <0x4100B344>;
+		};
+	};
+
 	soc: soc { };
 };
 
@@ -135,6 +198,36 @@
 	ranges = <0 0 0 0xffffffff>;
 	compatible = "simple-bus";
 
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+
+		CPU_PD0: cpu-pd0 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+		};
+
+		CPU_PD1: cpu-pd1 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+		};
+
+		CPU_PD2: cpu-pd2 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+		};
+
+		CPU_PD3: cpu-pd3 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+		};
+
+		CLUSTER_PD: cluster-pd {
+			#power-domain-cells = <0>;
+			domain-idle-states = <&CLUSTER_PWR_DN &CX_RET &APSS_OFF>;
+		};
+	};
+
 	intc: interrupt-controller@17200000 {
 		compatible = "arm,gic-v3";
 		#interrupt-cells = <3>;
@@ -157,6 +250,7 @@
 		interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
 			     <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&CLUSTER_PD>;
 
 		apps_rsc_drv2: drv@2 {
 			qcom,drv-id = <2>;
@@ -180,6 +274,11 @@
 		clock-frequency = <19200000>;
 	};
 
+	cluster-device {
+		compatible = "qcom,lpm-cluster-dev";
+		power-domains = <&CLUSTER_PD>;
+	};
+
 	memtimer: timer@17420000 {
 		#address-cells = <1>;
 		#size-cells = <1>;