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authorJon Medhurst (Tixy) <tixy@linaro.org>2015-12-09 09:40:53 +0000
committerOlof Johansson <olof@lixom.net>2015-12-22 11:23:20 -0800
commit28e10a8f3a03f39d087bb6180be2fb1f407664e5 (patch)
treec45023fee1d2b7d4cbaac0adbb4d51708181735a /arch/arm64/boot/dts/arm/juno.dts
parentc7a5675f525c668ec4dabd06705d5243f0d9da90 (diff)
downloadlinux-28e10a8f3a03f39d087bb6180be2fb1f407664e5.tar.gz
arm64: dts: juno: Add idle-states to device tree
This patch adds idle-states bindings data collected through a set of benchmarking experiments (latency and energy consumption) on Juno boards. Latencies data represents the worst case scenarios as required by the DT idle-states bindings. Signed-off-by: Jon Medhurst <tixy@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm64/boot/dts/arm/juno.dts')
-rw-r--r--arch/arm64/boot/dts/arm/juno.dts28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts
index 53442b5ee4ff..dcfcf15a17f5 100644
--- a/arch/arm64/boot/dts/arm/juno.dts
+++ b/arch/arm64/boot/dts/arm/juno.dts
@@ -60,6 +60,28 @@
};
};
+ idle-states {
+ entry-method = "arm,psci";
+
+ CPU_SLEEP_0: cpu-sleep-0 {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x0010000>;
+ local-timer-stop;
+ entry-latency-us = <300>;
+ exit-latency-us = <1200>;
+ min-residency-us = <2000>;
+ };
+
+ CLUSTER_SLEEP_0: cluster-sleep-0 {
+ compatible = "arm,idle-state";
+ arm,psci-suspend-param = <0x1010000>;
+ local-timer-stop;
+ entry-latency-us = <300>;
+ exit-latency-us = <1200>;
+ min-residency-us = <2500>;
+ };
+ };
+
A57_0: cpu@0 {
compatible = "arm,cortex-a57","arm,armv8";
reg = <0x0 0x0>;
@@ -67,6 +89,7 @@
enable-method = "psci";
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A57_1: cpu@1 {
@@ -76,6 +99,7 @@
enable-method = "psci";
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_0: cpu@100 {
@@ -85,6 +109,7 @@
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_1: cpu@101 {
@@ -94,6 +119,7 @@
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_2: cpu@102 {
@@ -103,6 +129,7 @@
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_3: cpu@103 {
@@ -112,6 +139,7 @@
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
+ cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A57_L2: l2-cache0 {