Patch "arm64: dts: qcom: sm8550: Update idle state time requirements" has been added to the 6.7-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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 6.7-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-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 18f4d768b6d8877fc0e488d241e1d81bce6e8a53
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 a3aba04e4c4a..5cf813a579d5 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -285,9 +285,9 @@ 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;
 			};
 
@@ -296,8 +296,8 @@ 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;
 			};
 
@@ -316,17 +316,17 @@ 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>;
 			};
 		};
 	};