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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K
This patch adds CPU deep Idle and Cluster deep Idle states BUT it defines the idle state for each cpu (defined under cpu-idle-states parameter) only for the quad version therefore it does NOT activate CPU Idle capability for the other version. [gregory: extract from a larger patch] Signed-off-by: orenbh <orenbh@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
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arch/arm64/boot/dts/marvell
@ -20,24 +20,28 @@ cpu0: cpu@0 {
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compatible = "arm,cortex-a72", "arm,armv8";
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reg = <0x000>;
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enable-method = "psci";
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cpu-idle-states = <&CPU_SLEEP_0>;
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};
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cpu1: cpu@1 {
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device_type = "cpu";
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compatible = "arm,cortex-a72", "arm,armv8";
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reg = <0x001>;
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enable-method = "psci";
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cpu-idle-states = <&CPU_SLEEP_0>;
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};
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cpu2: cpu@100 {
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device_type = "cpu";
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compatible = "arm,cortex-a72", "arm,armv8";
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reg = <0x100>;
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enable-method = "psci";
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cpu-idle-states = <&CPU_SLEEP_0>;
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};
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cpu3: cpu@101 {
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device_type = "cpu";
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compatible = "arm,cortex-a72", "arm,armv8";
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reg = <0x101>;
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enable-method = "psci";
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cpu-idle-states = <&CPU_SLEEP_0>;
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};
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};
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};
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@ -28,6 +28,33 @@ psci {
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method = "smc";
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};
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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idle_states {
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entry_method = "arm,pcsi";
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CPU_SLEEP_0: cpu-sleep-0 {
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compatible = "arm,idle-state";
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local-timer-stop;
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arm,psci-suspend-param = <0x0010000>;
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entry-latency-us = <80>;
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exit-latency-us = <160>;
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min-residency-us = <320>;
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};
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CLUSTER_SLEEP_0: cluster-sleep-0 {
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compatible = "arm,idle-state";
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local-timer-stop;
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arm,psci-suspend-param = <0x1010000>;
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entry-latency-us = <500>;
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exit-latency-us = <1000>;
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min-residency-us = <2500>;
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};
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};
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};
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ap806 {
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#address-cells = <2>;
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#size-cells = <2>;
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