From: Peng Fan <peng.fan@xxxxxxx>
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@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
index 8891b4dc3bea..17cbe526a5b0 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 {
--
2.37.1
