Re: [PATCH] arm64: dts: qcom: sm6115: Add CPU idle-states

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On 3/3/23 6:33 AM, Konrad Dybcio wrote:


On 18.01.2023 21:48, Bhupesh Sharma wrote:
On Thu, 19 Jan 2023 at 02:10, Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> wrote:



On 18.01.2023 21:34, Bhupesh Sharma wrote:
Add CPU idle-state nodes and power-domains in Qualcomm sm6115 SoC dtsi.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@xxxxxxxxxx>
---
[...]

+
+             domain-idle-states {
+                     CLUSTER_SLEEP_0: cluster-sleep-0 {
+                             compatible = "domain-idle-state";
+                             idle-state-name = "cluster-power-collapse";
+                             arm,psci-suspend-param = <0x41000043>;
+                             entry-latency-us = <800>;
+                             exit-latency-us = <2118>;
+                             min-residency-us = <7376>;
These values vary per cluster, see qcom,pm-cluster-level@2 in the
file linked above.. We should either split that, or at least take
max() of each value between the two nodes to make sure the sleep
state is exited properly on both types of cores.

Ack to both the above observations. Will send a fixed v2 shortly.
In doing so, please also add support for D3G cluster sleep states
as well, it sounds beneficial to have a middleground between a total
power collapse and a simple wfi.


Right. I am adding D3G in v2.
I will share the same shortly.

Regards,
Bhupesh



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