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| author | Stefan Krsmanovic <stefan.krsmanovic@aggios.com> | 2016-10-21 12:44:56 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2017-08-21 14:07:30 +0200 |
| commit | 1e4e25c8ae8f05ab8634ade3b848a4c1d95cef53 (patch) | |
| tree | 39d828f40c689ba76fc74a6a9c25df7af12534f7 /arch/arm64 | |
| parent | 400e188fa895c9e77f3dd731d7797f708ff0eed4 (diff) | |
| download | linux-1e4e25c8ae8f05ab8634ade3b848a4c1d95cef53.tar.gz linux-1e4e25c8ae8f05ab8634ade3b848a4c1d95cef53.tar.bz2 linux-1e4e25c8ae8f05ab8634ade3b848a4c1d95cef53.zip | |
arm64: zynqmp: Add idle state for ZynqMP
Added the idle-states node to describe zynqmp idle states. Only
cpu-sleep-0 idle state is added in this patch. References to the
idle-states node are added in all CPU nodes. Time values: entry/exit
latencies and min-residency, needs to be tuned. arm,psci-suspend-param
is selected to comply with PSCIv1.0 and Extended StateID format.
Signed-off-by: Stefan Krsmanovic <stefan.krsmanovic@aggios.com>
Acked-by: Will Wong <willw@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi index 4f7d9905e235..8e6cf0cf3a69 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi +++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi @@ -25,6 +25,7 @@ device_type = "cpu"; enable-method = "psci"; reg = <0x0>; + cpu-idle-states = <&CPU_SLEEP_0>; }; cpu1: cpu@1 { @@ -32,6 +33,7 @@ device_type = "cpu"; enable-method = "psci"; reg = <0x1>; + cpu-idle-states = <&CPU_SLEEP_0>; }; cpu2: cpu@2 { @@ -39,6 +41,7 @@ device_type = "cpu"; enable-method = "psci"; reg = <0x2>; + cpu-idle-states = <&CPU_SLEEP_0>; }; cpu3: cpu@3 { @@ -46,6 +49,20 @@ device_type = "cpu"; enable-method = "psci"; reg = <0x3>; + cpu-idle-states = <&CPU_SLEEP_0>; + }; + + idle-states { + entry-method = "arm,psci"; + + CPU_SLEEP_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x40000000>; + local-timer-stop; + entry-latency-us = <300>; + exit-latency-us = <600>; + min-residency-us = <10000>; + }; }; }; |