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>
This commit is contained in:
orenbh 2018-09-21 18:09:16 +02:00 committed by Gregory CLEMENT
parent 92e5d4e939
commit 8ed4636877
2 changed files with 31 additions and 0 deletions
arch/arm64/boot/dts/marvell

View File

@ -20,24 +20,28 @@ cpu0: cpu@0 {
compatible = "arm,cortex-a72", "arm,armv8";
reg = <0x000>;
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a72", "arm,armv8";
reg = <0x001>;
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu2: cpu@100 {
device_type = "cpu";
compatible = "arm,cortex-a72", "arm,armv8";
reg = <0x100>;
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
};
cpu3: cpu@101 {
device_type = "cpu";
compatible = "arm,cortex-a72", "arm,armv8";
reg = <0x101>;
enable-method = "psci";
cpu-idle-states = <&CPU_SLEEP_0>;
};
};
};

View File

@ -28,6 +28,33 @@ psci {
method = "smc";
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
idle_states {
entry_method = "arm,pcsi";
CPU_SLEEP_0: cpu-sleep-0 {
compatible = "arm,idle-state";
local-timer-stop;
arm,psci-suspend-param = <0x0010000>;
entry-latency-us = <80>;
exit-latency-us = <160>;
min-residency-us = <320>;
};
CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "arm,idle-state";
local-timer-stop;
arm,psci-suspend-param = <0x1010000>;
entry-latency-us = <500>;
exit-latency-us = <1000>;
min-residency-us = <2500>;
};
};
};
ap806 {
#address-cells = <2>;
#size-cells = <2>;