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arm64: dts: juno: fix cluster sleep state entry latency on all SoC versions 

The core and the cluster sleep state entry latencies can't be same as
cluster sleep involves more work compared to core level e.g. shared
cache maintenance.

Experiments have shown on an average about 100us more latency for the
cluster sleep state compared to the core level sleep. This patch fixes
the entry latency for the cluster sleep state.

Fixes: 28e10a8f3a ("arm64: dts: juno: Add idle-states to device tree")
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: "Jon Medhurst (Tixy)" <tixy@linaro.org>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Sudeep Holla 2016-11-16 17:31:31 +00:00 committed by Arnd Bergmann
parent 4c9456df88
commit 909e481e24
3 changed files with 3 additions and 3 deletions
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2
arch/arm64/boot/dts/arm/juno-r1.dts
View File

@ -76,7 +76,7 @@ CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "arm,idle-state";
arm,psci-suspend-param = <0x1010000>;
local-timer-stop;
entry-latency-us = <300>;
entry-latency-us = <400>;
exit-latency-us = <1200>;
min-residency-us = <2500>;
};

2
arch/arm64/boot/dts/arm/juno-r2.dts
View File

@ -76,7 +76,7 @@ CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "arm,idle-state";
arm,psci-suspend-param = <0x1010000>;
local-timer-stop;
entry-latency-us = <300>;
entry-latency-us = <400>;
exit-latency-us = <1200>;
min-residency-us = <2500>;
};

2
arch/arm64/boot/dts/arm/juno.dts
View File

@ -76,7 +76,7 @@ CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "arm,idle-state";
arm,psci-suspend-param = <0x1010000>;
local-timer-stop;
entry-latency-us = <300>;
entry-latency-us = <400>;
exit-latency-us = <1200>;
min-residency-us = <2500>;
};