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The standby idle state enables the CPU cores to enter WFI through the CPUIdle framework. Signed-off-by: Kendall Willis --- arch/arm64/boot/dts/ti/k3-am62p5.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am62p5.dtsi b/arch/arm64/boot/dts/ti/k3-am62p5.dtsi index 8982a7b9f1a6a1d1a0eebe9342fdfa5d46245159..74a588e94e22a9addb44b2df495d5a8ed75967d4 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p5.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p5.dtsi @@ -50,6 +50,7 @@ cpu0: cpu@0 { operating-points-v2 = <&a53_opp_table>; clocks = <&k3_clks 135 0>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_STANDBY>; }; cpu1: cpu@1 { @@ -67,6 +68,7 @@ cpu1: cpu@1 { operating-points-v2 = <&a53_opp_table>; clocks = <&k3_clks 136 0>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_STANDBY>; }; cpu2: cpu@2 { @@ -84,6 +86,7 @@ cpu2: cpu@2 { operating-points-v2 = <&a53_opp_table>; clocks = <&k3_clks 137 0>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_STANDBY>; }; cpu3: cpu@3 { @@ -101,6 +104,20 @@ cpu3: cpu@3 { operating-points-v2 = <&a53_opp_table>; clocks = <&k3_clks 138 0>; #cooling-cells = <2>; + cpu-idle-states = <&CPU_STANDBY>; + }; + + cpu_idle_states: idle-states { + entry-method = "psci"; + + CPU_STANDBY: cpu-standby { + compatible = "arm,idle-state"; + entry-latency-us = <100>; + exit-latency-us = <50>; + idle-state-name = "standby"; + min-residency-us = <500>; + arm,psci-suspend-param = <0x00000001>; + }; }; }; -- 2.34.1