diff options
| author | Sudeep Holla <sudeep.holla@arm.com> | 2016-11-16 17:31:31 +0000 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2017-04-10 14:54:12 +0000 |
| commit | c71ad0f6b384393d99188ad333429c145f5b594a (patch) | |
| tree | 7e20c4d6bfc0fde13187ab35ed9f2aabd4c5e796 | |
| parent | 6c8d409129bbebe36cde9f8e511011756216163a (diff) | |
BACKPORT: 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: 28e10a8f3a03 ("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>
Fixes: Change-Id: I7b2d81fa66f8ce8b229457cfefff06e9edd545c7
(arm64: dts: juno: Add idle-states to device tree)
(cherry picked from commit 909e481e2467f202b97d42beef246e8829416a85)
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/arm/juno-r1.dts | 2 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/arm/juno.dts | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts index 8826f834f54f..29315af22147 100644 --- a/arch/arm64/boot/dts/arm/juno-r1.dts +++ b/arch/arm64/boot/dts/arm/juno-r1.dts @@ -76,7 +76,7 @@ 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>; }; diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts index f113a80519cd..a5004931e2f1 100644 --- a/arch/arm64/boot/dts/arm/juno.dts +++ b/arch/arm64/boot/dts/arm/juno.dts @@ -76,7 +76,7 @@ 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>; }; |