FVP: update device tree idle state entries

Device tree idle state bindings changed in kernel v3.18. This patch
updates the FVP DT files to use PSCI suspend as idle state.

The patch also updates the 'compatible' property in the PSCI node
and the 'entry-method' property in the idle-states node in the FVP
Foundation GICv2-legacy device tree.

Change-Id: Ie921d497c579f425c03d482f9d7b90e166106e2f

fdts/fvp-base-gicv2-psci.dts

@@ -102,7 +102,8 @@
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -110,7 +111,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;

fdts/fvp-base-gicv2legacy-psci.dts

@@ -102,7 +102,8 @@
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -110,7 +111,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;

fdts/fvp-base-gicv3-psci.dts

@@ -100,7 +100,8 @@
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -108,7 +109,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;

fdts/fvp-foundation-gicv2-psci.dts

@@ -87,7 +87,8 @@
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -95,7 +96,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;

fdts/fvp-foundation-gicv2legacy-psci.dts

@@ -52,7 +52,7 @@
 	};
 
 	psci {
-		compatible = "arm,psci";
+		compatible = "arm,psci-1.0", "arm,psci-0.2", "arm,psci";
 		method = "smc";
 		cpu_suspend = <0xc4000001>;
 		cpu_off = <0x84000002>;
@@ -83,11 +83,12 @@
 		};
 
 		idle-states {
-			entry-method = "arm,psci-1.0", "arm,psci-0.2", "arm,psci";
+			entry-method = "arm,psci";
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -95,7 +96,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;

fdts/fvp-foundation-gicv3-psci.dts

@@ -85,7 +85,8 @@
 
 			CPU_SLEEP_0: cpu-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x0010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x0010000>;
 				entry-latency-us = <40>;
 				exit-latency-us = <100>;
 				min-residency-us = <150>;
@@ -93,7 +94,8 @@
 
 			CLUSTER_SLEEP_0: cluster-sleep-0 {
 				compatible = "arm,idle-state";
-				entry-method-param = <0x1010000>;
+				local-timer-stop;
+				arm,psci-suspend-param = <0x1010000>;
 				entry-latency-us = <500>;
 				exit-latency-us = <1000>;
 				min-residency-us = <2500>;