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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2014-06-24 16:20:28 +0100
committerDaniel Lezcano <daniel.lezcano@linaro.org>2014-09-25 10:52:21 +0200
commitd2e5c871ed8a250f7ee1fe34dd52ed5757363fba (patch)
tree538319f8d1a3134ac131d90ba5664d621121959b /arch/arm/boot/dts
parent3299b63de384159579143d4abdfb94013e0b5470 (diff)
downloadblackbird-op-linux-d2e5c871ed8a250f7ee1fe34dd52ed5757363fba.tar.gz
blackbird-op-linux-d2e5c871ed8a250f7ee1fe34dd52ed5757363fba.zip
drivers: cpuidle: initialize big.LITTLE driver through DT
With the introduction of DT based idle states, CPUidle drivers for ARM can now initialize idle states data through properties in the device tree. This patch adds code to the big.LITTLE CPUidle driver to dynamically initialize idle states data through the updated device tree source file. Cc: Chander Kashyap <k.chander@samsung.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts')
-rw-r--r--arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts23
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
index a25c262326dc..322fd1519b09 100644
--- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
+++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
@@ -38,6 +38,7 @@
compatible = "arm,cortex-a15";
reg = <0>;
cci-control-port = <&cci_control1>;
+ cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
};
cpu1: cpu@1 {
@@ -45,6 +46,7 @@
compatible = "arm,cortex-a15";
reg = <1>;
cci-control-port = <&cci_control1>;
+ cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
};
cpu2: cpu@2 {
@@ -52,6 +54,7 @@
compatible = "arm,cortex-a7";
reg = <0x100>;
cci-control-port = <&cci_control2>;
+ cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
};
cpu3: cpu@3 {
@@ -59,6 +62,7 @@
compatible = "arm,cortex-a7";
reg = <0x101>;
cci-control-port = <&cci_control2>;
+ cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
};
cpu4: cpu@4 {
@@ -66,6 +70,25 @@
compatible = "arm,cortex-a7";
reg = <0x102>;
cci-control-port = <&cci_control2>;
+ cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
+ };
+
+ idle-states {
+ CLUSTER_SLEEP_BIG: cluster-sleep-big {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ entry-latency-us = <1000>;
+ exit-latency-us = <700>;
+ min-residency-us = <2000>;
+ };
+
+ CLUSTER_SLEEP_LITTLE: cluster-sleep-little {
+ compatible = "arm,idle-state";
+ local-timer-stop;
+ entry-latency-us = <1000>;
+ exit-latency-us = <500>;
+ min-residency-us = <2500>;
+ };
};
};
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