From 3bce742da88bae0fc0045fed57999e155328bbdb Mon Sep 17 00:00:00 2001
From: Sneh Mankad <quic_smankad@quicinc.com>
Date: Fri, 27 Dec 2024 15:35:22 +0530
Subject: [PATCH] ARM: dts: qcom: Add LPM devices for sdxkova

Add idle states for CPU and CPU clusters, add PSCI device to
enable CPU to enter LPMs.

Additionally, update APPS RSC device to be in cluster power
domain to handle RSC activites when cluster is powering off.

Change-Id: Ibe2fa720bc5e81084d380b2e5dc4f8fa8910566c
Signed-off-by: Sneh Mankad <quic_smankad@quicinc.com>
---
 qcom/sdxkova.dtsi | 110 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)

diff --git a/qcom/sdxkova.dtsi b/qcom/sdxkova.dtsi
index 1d3434d0..5130ff86 100644
--- a/qcom/sdxkova.dtsi
+++ b/qcom/sdxkova.dtsi
@@ -42,6 +42,24 @@
 			     <GIC_PPI 12 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
 	};
 
+	cpus {
+		CPU0: cpu@0 {
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+		};
+
+		CPU1: cpu@100 {
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+		};
+
+		CPU2: cpu@200 {
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+		};
+
+		CPU3: cpu@300 {
+			cpu-idle-states = <&SILVER_OFF &SILVER_RAIL_OFF>;
+		};
+	};
+
 	/delete-node/ reserved-memory;
 
 	reserved_memory: reserved-memory {
@@ -76,7 +94,93 @@
 
 	};
 
+	/delete-node/ idle-states;
+
+	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>;
+		};
+	};
+
+	/delete-node/ psci;
+
 	soc: soc {
+
+		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>;
+			};
+		};
+
 		/delete-node/ rsc@17a00000;
 
 		apps_rsc: rsc@17a00000 {
@@ -90,6 +194,7 @@
 			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>;
@@ -166,6 +271,11 @@
 				};
 			};
 		};
+
+		cluster-device {
+			compatible = "qcom,lpm-cluster-dev";
+			power-domains = <&CLUSTER_PD>;
+		};
 	};
 
 	firmware: firmware { };