diff options
| author | Yuantian Tang <andy.tang@nxp.com> | 2017-08-07 09:54:39 +0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2017-08-14 09:14:19 +0800 |
| commit | 39a71db1e22b5a38c0ea5922f91786fbc5f1d8fe (patch) | |
| tree | 769e42b64eb380f0443ea0dd33df2e044d104224 /arch/arm64/boot/dts/freescale | |
| parent | 5334e1a24967bf0cc6423247ff5142a8e95f17d7 (diff) | |
arm64: dts: ls208xa: add cpu idle support
ls208xa supports another cpu idle state which is pw20 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/freescale')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 17 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls2088a.dtsi | 17 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 5 |
3 files changed, 39 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi index d789c6814e6a..8d739301e7b8 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi @@ -53,6 +53,7 @@ compatible = "arm,cortex-a57"; reg = <0x0>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster0_l2>; #cooling-cells = <2>; }; @@ -62,6 +63,7 @@ compatible = "arm,cortex-a57"; reg = <0x1>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster0_l2>; }; @@ -70,6 +72,7 @@ compatible = "arm,cortex-a57"; reg = <0x100>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster1_l2>; #cooling-cells = <2>; }; @@ -79,6 +82,7 @@ compatible = "arm,cortex-a57"; reg = <0x101>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster1_l2>; }; @@ -87,6 +91,7 @@ compatible = "arm,cortex-a57"; reg = <0x200>; clocks = <&clockgen 1 2>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster2_l2>; #cooling-cells = <2>; }; @@ -96,6 +101,7 @@ compatible = "arm,cortex-a57"; reg = <0x201>; clocks = <&clockgen 1 2>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster2_l2>; }; @@ -105,6 +111,7 @@ reg = <0x300>; clocks = <&clockgen 1 3>; next-level-cache = <&cluster3_l2>; + cpu-idle-states = <&CPU_PW20>; #cooling-cells = <2>; }; @@ -113,6 +120,7 @@ compatible = "arm,cortex-a57"; reg = <0x301>; clocks = <&clockgen 1 3>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster3_l2>; }; @@ -131,6 +139,15 @@ cluster3_l2: l2-cache3 { compatible = "cache"; }; + + CPU_PW20: cpu-pw20 { + compatible = "arm,idle-state"; + idle-state-name = "PW20"; + arm,psci-suspend-param = <0x00010000>; + entry-latency-us = <2000>; + exit-latency-us = <2000>; + min-residency-us = <6000>; + }; }; &pcie1 { diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2088a.dtsi index 5c695c658056..6aa319dae396 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls2088a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls2088a.dtsi @@ -53,6 +53,7 @@ compatible = "arm,cortex-a72"; reg = <0x0>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster0_l2>; #cooling-cells = <2>; }; @@ -62,6 +63,7 @@ compatible = "arm,cortex-a72"; reg = <0x1>; clocks = <&clockgen 1 0>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster0_l2>; }; @@ -70,6 +72,7 @@ compatible = "arm,cortex-a72"; reg = <0x100>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster1_l2>; #cooling-cells = <2>; }; @@ -79,6 +82,7 @@ compatible = "arm,cortex-a72"; reg = <0x101>; clocks = <&clockgen 1 1>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster1_l2>; }; @@ -88,6 +92,7 @@ reg = <0x200>; clocks = <&clockgen 1 2>; next-level-cache = <&cluster2_l2>; + cpu-idle-states = <&CPU_PW20>; #cooling-cells = <2>; }; @@ -96,6 +101,7 @@ compatible = "arm,cortex-a72"; reg = <0x201>; clocks = <&clockgen 1 2>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster2_l2>; }; @@ -104,6 +110,7 @@ compatible = "arm,cortex-a72"; reg = <0x300>; clocks = <&clockgen 1 3>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster3_l2>; #cooling-cells = <2>; }; @@ -113,6 +120,7 @@ compatible = "arm,cortex-a72"; reg = <0x301>; clocks = <&clockgen 1 3>; + cpu-idle-states = <&CPU_PW20>; next-level-cache = <&cluster3_l2>; }; @@ -131,6 +139,15 @@ cluster3_l2: l2-cache3 { compatible = "cache"; }; + + CPU_PW20: cpu-pw20 { + compatible = "arm,idle-state"; + idle-state-name = "PW20"; + arm,psci-suspend-param = <0x00010000>; + entry-latency-us = <2000>; + exit-latency-us = <2000>; + min-residency-us = <6000>; + }; }; &pcie1 { diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi index fc1234dc90f9..4fb9a0966a84 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi @@ -125,6 +125,11 @@ interrupts = <1 7 0x8>; /* PMU PPI, Level low type */ }; + psci { + compatible = "arm,psci-0.2"; + method = "smc"; + }; + soc { compatible = "simple-bus"; #address-cells = <2>; |