[PATCH 4/4] arm64: dts: enable idle states for Hi6220

Leo Yan
2015-10-09T04:39:19Z

Add cpu and cluster level's low power state for Hi6220.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
index 7edbe42..e83802a 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
+++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
@@ -52,11 +52,35 @@
};
};

+ idle-states {
+ entry-method = "arm,psci";
+
+ CPU_SLEEP: cpu-sleep {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x0010000>;
+ entry-latency-us = <700>;
+ exit-latency-us = <250>;
+ min-residency-us = <1000>;
+ };
+
+ CLUSTER_SLEEP: cluster-sleep {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ arm,psci-suspend-param = <0x1010000>;
+ entry-latency-us = <1000>;
+ exit-latency-us = <700>;
+ min-residency-us = <2700>;
+ wakeup-latency-us = <1500>;
+ };
+ };
+
cpu0: cpu@0 {
compatible = "arm,cortex-a53", "arm,armv8";
device_type = "cpu";
reg = <0x0 0x0>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu1: cpu@1 {
@@ -64,6 +88,7 @@
device_type = "cpu";
reg = <0x0 0x1>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu2: cpu@2 {
@@ -71,6 +96,7 @@
device_type = "cpu";
reg = <0x0 0x2>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu3: cpu@3 {
@@ -78,6 +104,7 @@
device_type = "cpu";
reg = <0x0 0x3>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu4: cpu@100 {
@@ -85,6 +112,7 @@
device_type = "cpu";
reg = <0x0 0x100>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu5: cpu@101 {
@@ -92,6 +120,7 @@
device_type = "cpu";
reg = <0x0 0x101>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu6: cpu@102 {
@@ -99,6 +128,7 @@
device_type = "cpu";
reg = <0x0 0x102>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};

cpu7: cpu@103 {
@@ -106,6 +136,7 @@
device_type = "cpu";
reg = <0x0 0x103>;
enable-method = "psci";
+ cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP>;
};
};

--
1.9.1