[PATCH v2 5/7] arm64: dts: freescale: imx95: enable A55 cpuidle

Peng Fan (OSS)
2024-09-03T07:09:17Z

From: Peng Fan <peng.fan@nxp.com>

Add cpuidle node and enable cpuidle for A55.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
arch/arm64/boot/dts/freescale/imx95.dtsi | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index d031b9548aaf..a7e411f1daa6 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -22,12 +22,27 @@ cpus {
#address-cells = <1>;
#size-cells = <0>;

+ idle-states {
+ entry-method = "psci";
+
+ cpu_pd_wait: cpu-pd-wait {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x0010033>;
+ local-timer-stop;
+ entry-latency-us = <10000>;
+ exit-latency-us = <7000>;
+ min-residency-us = <27000>;
+ wakeup-latency-us = <15000>;
+ };
+ };
+
A55_0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a55";
reg = <0x0>;
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX95_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@@ -45,6 +60,7 @@ A55_1: cpu@100 {
reg = <0x100>;
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX95_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@@ -62,6 +78,7 @@ A55_2: cpu@200 {
reg = <0x200>;
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX95_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@@ -79,6 +96,7 @@ A55_3: cpu@300 {
reg = <0x300>;
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX95_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@@ -98,6 +116,7 @@ A55_4: cpu@400 {
power-domain-names = "perf";
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
i-cache-size = <32768>;
i-cache-line-size = <64>;
i-cache-sets = <128>;
@@ -115,6 +134,7 @@ A55_5: cpu@500 {
power-domain-names = "perf";
enable-method = "psci";
#cooling-cells = <2>;
+ cpu-idle-states = <&cpu_pd_wait>;
i-cache-size = <32768>;
i-cache-line-size = <64>;
i-cache-sets = <128>;

--
2.37.1