dts: nxp: imx943: add CPU power states for M33 and M7 cores

Introduce power state definitions for i.MX943 Cortex-M cores in DTS

Signed-off-by: Yongxu Wang <[email protected]>

Author: yongxu-wang15

dts/arm/nxp/nxp_imx943_m33.dtsi

@@ -16,9 +16,10 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0:cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-m33";
+			cpu-power-states = <&wait &stop &suspend>;
 			reg = <0>;
 			clock-frequency = <DT_FREQ_M(333)>;
 
@@ -30,6 +31,29 @@
 				reg = <0xe000ed90 0x40>;
 			};
 		};
+
+		power-states {
+			wait: power-state-wait {
+				compatible = "zephyr,power-state";
+				power-state-name = "runtime-idle";
+				min-residency-us = <100>;
+				exit-latency-us = <50>;
+			};
+
+			stop: power-state-stop {
+				compatible = "zephyr,power-state";
+				power-state-name = "suspend-to-idle";
+				min-residency-us = <1000>;
+				exit-latency-us = <200>;
+			};
+
+			suspend: power-state-suspend {
+				compatible = "zephyr,power-state";
+				power-state-name = "standby";
+				min-residency-us = <5000>;
+				exit-latency-us = <1000>;
+			};
+		};
 	};
 
 	reserved-memory {

dts/arm/nxp/nxp_imx943_m7_0.dtsi

@@ -15,11 +15,12 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-m7";
 			reg = <0>;
 			clock-frequency = <DT_FREQ_M(800)>;
+			cpu-power-states = <&wait &stop &suspend>;
 
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -30,6 +31,29 @@
 				reg = <0xe000ed90 0x40>;
 			};
 		};
+
+		power-states {
+			wait: power-state-wait {
+				compatible = "zephyr,power-state";
+				power-state-name = "runtime-idle";
+				min-residency-us = <100>;
+				exit-latency-us = <50>;
+			};
+
+			stop: power-state-stop {
+				compatible = "zephyr,power-state";
+				power-state-name = "suspend-to-idle";
+				min-residency-us = <1000>;
+				exit-latency-us = <200>;
+			};
+
+			suspend: power-state-suspend {
+				compatible = "zephyr,power-state";
+				power-state-name = "standby";
+				min-residency-us = <5000>;
+				exit-latency-us = <1000>;
+			};
+		};
 	};
 
 	reserved-memory {

dts/arm/nxp/nxp_imx943_m7_1.dtsi

@@ -15,11 +15,12 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-m7";
 			reg = <0>;
 			clock-frequency = <DT_FREQ_M(800)>;
+			cpu-power-states = <&wait &stop &suspend>;
 
 			#address-cells = <1>;
 			#size-cells = <1>;
@@ -30,6 +31,29 @@
 				reg = <0xe000ed90 0x40>;
 			};
 		};
+
+		power-states {
+			wait: power-state-wait {
+				compatible = "zephyr,power-state";
+				power-state-name = "runtime-idle";
+				min-residency-us = <100>;
+				exit-latency-us = <50>;
+			};
+
+			stop: power-state-stop {
+				compatible = "zephyr,power-state";
+				power-state-name = "suspend-to-idle";
+				min-residency-us = <1000>;
+				exit-latency-us = <200>;
+			};
+
+			suspend: power-state-suspend {
+				compatible = "zephyr,power-state";
+				power-state-name = "standby";
+				min-residency-us = <5000>;
+				exit-latency-us = <1000>;
+			};
+		};
 	};
 
 	reserved-memory {