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arm64: dts: imx952: Add idle-states node 

Add idle-states node and refer it in A55 nodes to enable cpuidle.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
master
Peng Fan 2026-01-11 20:40:07 +08:00 committed by Shawn Guo
parent 5eb7405db9
commit 730f6b28cb
1 changed files with 19 additions and 1 deletions
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20
arch/arm64/boot/dts/freescale/imx952.dtsi
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
/*
* Copyright 2025 NXP
* Copyright 2025-2026 NXP
*/
#include <dt-bindings/dma/fsl-edma.h>
@ -50,12 +50,27 @@
#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 = <1000>;
exit-latency-us = <700>;
min-residency-us = <2700>;
wakeup-latency-us = <1500>;
};
};
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 IMX952_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@ -73,6 +88,7 @@
reg = <0x100>;
enable-method = "psci";
#cooling-cells = <2>;
cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX952_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@ -90,6 +106,7 @@
reg = <0x200>;
enable-method = "psci";
#cooling-cells = <2>;
cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX952_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;
@ -107,6 +124,7 @@
reg = <0x300>;
enable-method = "psci";
#cooling-cells = <2>;
cpu-idle-states = <&cpu_pd_wait>;
power-domains = <&scmi_perf IMX952_PERF_A55>;
power-domain-names = "perf";
i-cache-size = <32768>;