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arm64: dts: ls1088a: add cpu idle support

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ls1088a supports another cpu idle state which is ph20 which saves
more power when cpu is idle.
It was implemented through psci firmware.

Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Yuantian Tang
2017-08-07 09:54:38 +08:00
committed by Shawn Guo
parent 1e09dec932
commit 5334e1a249
1 changed files with 22 additions and 0 deletions
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22
arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
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@@ -66,6 +66,7 @@ cpu0: cpu@0 {
compatible = "arm,cortex-a53";
reg = <0x0>;
clocks = <&clockgen 1 0>;
cpu-idle-states = <&CPU_PH20>;
#cooling-cells = <2>;
};
@@ -74,6 +75,7 @@ cpu1: cpu@1 {
compatible = "arm,cortex-a53";
reg = <0x1>;
clocks = <&clockgen 1 0>;
cpu-idle-states = <&CPU_PH20>;
};
cpu2: cpu@2 {
@@ -81,6 +83,7 @@ cpu2: cpu@2 {
compatible = "arm,cortex-a53";
reg = <0x2>;
clocks = <&clockgen 1 0>;
cpu-idle-states = <&CPU_PH20>;
};
cpu3: cpu@3 {
@@ -88,6 +91,7 @@ cpu3: cpu@3 {
compatible = "arm,cortex-a53";
reg = <0x3>;
clocks = <&clockgen 1 0>;
cpu-idle-states = <&CPU_PH20>;
};
cpu4: cpu@100 {
@@ -95,6 +99,7 @@ cpu4: cpu@100 {
compatible = "arm,cortex-a53";
reg = <0x100>;
clocks = <&clockgen 1 1>;
cpu-idle-states = <&CPU_PH20>;
#cooling-cells = <2>;
};
@@ -103,6 +108,7 @@ cpu5: cpu@101 {
compatible = "arm,cortex-a53";
reg = <0x101>;
clocks = <&clockgen 1 1>;
cpu-idle-states = <&CPU_PH20>;
};
cpu6: cpu@102 {
@@ -110,6 +116,7 @@ cpu6: cpu@102 {
compatible = "arm,cortex-a53";
reg = <0x102>;
clocks = <&clockgen 1 1>;
cpu-idle-states = <&CPU_PH20>;
};
cpu7: cpu@103 {
@@ -117,6 +124,16 @@ cpu7: cpu@103 {
compatible = "arm,cortex-a53";
reg = <0x103>;
clocks = <&clockgen 1 1>;
cpu-idle-states = <&CPU_PH20>;
};
CPU_PH20: cpu-ph20 {
compatible = "arm,idle-state";
idle-state-name = "PH20";
arm,psci-suspend-param = <0x00010000>;
entry-latency-us = <1000>;
exit-latency-us = <1000>;
min-residency-us = <3000>;
};
};
@@ -140,6 +157,11 @@ timer {
<1 10 IRQ_TYPE_LEVEL_LOW>;/* Hypervisor PPI */
};
psci {
compatible = "arm,psci-0.2";
method = "smc";
};
sysclk: sysclk {
compatible = "fixed-clock";
#clock-cells = <0>;