diff options
| author | Yuantian Tang <andy.tang@nxp.com> | 2017-08-07 09:54:38 +0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2017-08-14 09:14:14 +0800 |
| commit | 5334e1a24967bf0cc6423247ff5142a8e95f17d7 (patch) | |
| tree | 54bb3a9a45f9ae4ea7ca0d43705ef6cdf627075f /arch/arm64/boot/dts | |
| parent | 1e09dec932ba4be212ad17df3021f71ee8ca5333 (diff) | |
arm64: dts: ls1088a: add cpu idle support
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>
Diffstat (limited to 'arch/arm64/boot/dts')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi index 6c22d75bc504..33797b373674 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi @@ -66,6 +66,7 @@ compatible = "arm,cortex-a53"; reg = <0x0>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PH20>; #cooling-cells = <2>; }; @@ -74,6 +75,7 @@ compatible = "arm,cortex-a53"; reg = <0x1>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PH20>; }; cpu2: cpu@2 { @@ -81,6 +83,7 @@ compatible = "arm,cortex-a53"; reg = <0x2>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PH20>; }; cpu3: cpu@3 { @@ -88,6 +91,7 @@ compatible = "arm,cortex-a53"; reg = <0x3>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PH20>; }; cpu4: cpu@100 { @@ -95,6 +99,7 @@ compatible = "arm,cortex-a53"; reg = <0x100>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PH20>; #cooling-cells = <2>; }; @@ -103,6 +108,7 @@ compatible = "arm,cortex-a53"; reg = <0x101>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PH20>; }; cpu6: cpu@102 { @@ -110,6 +116,7 @@ compatible = "arm,cortex-a53"; reg = <0x102>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PH20>; }; cpu7: cpu@103 { @@ -117,6 +124,16 @@ 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 @@ <1 10 IRQ_TYPE_LEVEL_LOW>;/* Hypervisor PPI */ }; + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + sysclk: sysclk { compatible = "fixed-clock"; #clock-cells = <0>; |