On 10/13/25 12:54 AM, Val Packett wrote: > Add the same PSCI state as seen on other Oryon-based SoCs like SM8750 > and Glymur, seems to work fine on Hamoa as well. > > Signed-off-by: Val Packett > --- > Tested on a Dell Latitude 7455: > > /sys/kernel/debug/pm_genpd/power-domain-system/idle_states: > State Time Spent(ms) Usage Rejected Above Below > S0 69476 23006 195 21562 0 > > Seems to mostly be used in system suspend, though I've occasionally seen > the counter increment a little bit during runtime as well. > --- FWIW the exact same state is hardcoded to be present if you use PSCI_SYSTEM_SUSPEND (which is mapped to `deep` in /sys/power/mem_sleep) > arch/arm64/boot/dts/qcom/x1e80100.dtsi | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi > index 3cf2568def3f..fab8104147bd 100644 > --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi > +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi > @@ -303,6 +303,14 @@ cluster_cl5: cluster-sleep-1 { > exit-latency-us = <4000>; > min-residency-us = <7000>; > }; > + > + domain_ss3: domain-sleep-0 { > + compatible = "domain-idle-state"; > + arm,psci-suspend-param = <0x0200c354>; > + entry-latency-us = <2800>; > + exit-latency-us = <4400>; > + min-residency-us = <10150>; You seem to have copied these time numbers from 8750 as well, but it's not a great idea, since they're tuned for getting a good perf/pwr profile for a mobile phone I attached an old patch I had laying around that described all three states exposed in the windows DSDT (although I'm not sure if that's exactly beneficial without additional tuning too) +Mukesh please take a look Konrad