This is a note to let you know that I've just added the patch titled
arm64: dts: qcom: sm8550: Update idle state time requirements
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-qcom-sm8550-update-idle-state-time-require.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a0f31b30b38c4dd7d04c4b1612d32226128fb966
Author: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Date: Mon Dec 18 17:02:13 2023 +0100
arm64: dts: qcom: sm8550: Update idle state time requirements
[ Upstream commit ad6556fb45d4ab91ad786a2025cbe2b0f2e6cf77 ]
The idle state entry/exit/residency times differ from what shipped on
production devices, mostly being overly optimistic in entry times and
overly pessimistic in minimal residency times. Align them with
downstream sources.
Fixes: ffc50b2d3828 ("arm64: dts: qcom: Add base SM8550 dtsi")
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231218-topic-8550_fixes-v1-12-ce1272d77540@xxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 15d91ace8703..3a228d4f0c14 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -283,9 +283,9 @@ LITTLE_CPU_SLEEP_0: cpu-sleep-0-0 {
compatible = "arm,idle-state";
idle-state-name = "silver-rail-power-collapse";
arm,psci-suspend-param = <0x40000004>;
- entry-latency-us = <800>;
+ entry-latency-us = <550>;
exit-latency-us = <750>;
- min-residency-us = <4090>;
+ min-residency-us = <6700>;
local-timer-stop;
};
@@ -294,8 +294,8 @@ BIG_CPU_SLEEP_0: cpu-sleep-1-0 {
idle-state-name = "gold-rail-power-collapse";
arm,psci-suspend-param = <0x40000004>;
entry-latency-us = <600>;
- exit-latency-us = <1550>;
- min-residency-us = <4791>;
+ exit-latency-us = <1300>;
+ min-residency-us = <8136>;
local-timer-stop;
};
@@ -314,17 +314,17 @@ domain-idle-states {
CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "domain-idle-state";
arm,psci-suspend-param = <0x41000044>;
- entry-latency-us = <1050>;
- exit-latency-us = <2500>;
- min-residency-us = <5309>;
+ entry-latency-us = <750>;
+ exit-latency-us = <2350>;
+ min-residency-us = <9144>;
};
CLUSTER_SLEEP_1: cluster-sleep-1 {
compatible = "domain-idle-state";
arm,psci-suspend-param = <0x4100c344>;
- entry-latency-us = <2700>;
- exit-latency-us = <3500>;
- min-residency-us = <13959>;
+ entry-latency-us = <2800>;
+ exit-latency-us = <4400>;
+ min-residency-us = <10150>;
};
};
};
