diff mbox series

[04/10] arm64: dts: imx8ulp: add cpuidle node

Message ID 20230625124238.4071717-5-peng.fan@oss.nxp.com (mailing list archive)
State New, archived
Headers show
Series arm64: dts: imx8ulp: add more nodes | expand

Commit Message

Peng Fan (OSS) June 25, 2023, 12:42 p.m. UTC 
From: Peng Fan <peng.fan@nxp.com>

Add cpuidle node and enable cpuidle for dual cores. The HW mode in
Arm Trusted Firmware is SoC Application Power Domain Sleep mode.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index fd30475a561d..16906c20bce9 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
@@ -40,6 +40,7 @@  A35_0: cpu@0 {
 			reg = <0x0 0x0>;
 			enable-method = "psci";
 			next-level-cache = <&A35_L2>;
+			cpu-idle-states = <&cpu_sleep>;
 		};
 
 		A35_1: cpu@1 {
@@ -48,6 +49,7 @@  A35_1: cpu@1 {
 			reg = <0x0 0x1>;
 			enable-method = "psci";
 			next-level-cache = <&A35_L2>;
+			cpu-idle-states = <&cpu_sleep>;
 		};
 
 		A35_L2: l2-cache0 {
@@ -55,6 +57,19 @@  A35_L2: l2-cache0 {
 			cache-level = <2>;
 			cache-unified;
 		};
+
+		idle-states {
+			entry-method = "psci";
+
+			cpu_sleep: cpu-sleep {
+				compatible = "arm,idle-state";
+				arm,psci-suspend-param = <0x0>;
+				local-timer-stop;
+				entry-latency-us = <1000>;
+				exit-latency-us = <700>;
+				min-residency-us = <2700>;
+			};
+		};
 	};
 
 	gic: interrupt-controller@2d400000 {