Re: [PATCH 7/7] arm64: dts: qcom: shikra: Add CPU idle states
From: Konrad Dybcio
Date: Wed Aug 19 2026 - 09:46:57 EST
On 8/3/26 12:33 PM, Sneh Mankad wrote:
>
>
> On 15-Jul-26 3:32 PM, Konrad Dybcio wrote:
>> On 7/13/26 12:25 PM, Sneh Mankad wrote:
>>> Add idle states for the CPUs as well as the whole cluster. This enables
>>> deeper-than-WFI cpuidle.
>>>
>>> Add MPM under cluster_pd power domain.
>>>
>>> Signed-off-by: Sneh Mankad <sneh.mankad@xxxxxxxxxxxxxxxx>
>>> ---
>>
>> [...]
>>
>>> + domain_idle_states: domain-idle-states {
>>> + cluster_sleep_apss_off: cluster-sleep-0 {
>>> + compatible = "domain-idle-state";
>>> + idle-state-name = "cluster-power-down";
>>> + arm,psci-suspend-param = <0x41000044>;
>>> + entry-latency-us = <2752>;
>>> + exit-latency-us = <3038>;
>>> + min-residency-us = <6118>;
>>> + };
>>> + };
>>
>> Is this really the deepest state available on Shikra?
>
> Yes, this is the deepest idle state for Shikra. It does involve
> handshaking with RPM to allow SoC level idle states to enter.
Ok, thanks for confirming, the number seemed low.
Konrad