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Subject[PATCH v2] arm64: dts: mediatek: Add cpuidle support for MT2712
Date
Add CPU idle state nodes to enable C1/C2 idle states.

Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
---

changes since v1:
- Rebase to 4.14-rc1.

arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
index 57d0396..5d4e406 100644
--- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
@@ -39,6 +39,7 @@
device_type = "cpu";
compatible = "arm,cortex-a35";
reg = <0x000>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};

cpu1: cpu@1 {
@@ -46,6 +47,7 @@
compatible = "arm,cortex-a35";
reg = <0x001>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};

cpu2: cpu@200 {
@@ -53,6 +55,29 @@
compatible = "arm,cortex-a72";
reg = <0x200>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
+ };
+
+ idle-states {
+ entry-method = "arm,psci";
+
+ CPU_SLEEP_0: cpu-sleep-0 {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ entry-latency-us = <100>;
+ exit-latency-us = <80>;
+ min-residency-us = <2000>;
+ arm,psci-suspend-param = <0x0010000>;
+ };
+
+ CLUSTER_SLEEP_0: cluster-sleep-0 {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ entry-latency-us = <350>;
+ exit-latency-us = <80>;
+ min-residency-us = <3000>;
+ arm,psci-suspend-param = <0x1010000>;
+ };
};
};

--
1.9.1
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