Re: [PATCH 1/3] arm64: dts: ti: k3-am625: add standby cpu idle state

[Nishanth Menon]

On 11:02-20260911, Kendall Willis wrote:
> Hi Nishanth,
> On 06:22-20260909, Nishanth Menon wrote:
> > On 16:00-20260907, Scaria Kochidanadu wrote:
> > > 
> > > On 21/08/26 00:58, Kendall Willis wrote:
> > > > Allow the A53 cores to enter standby mode on the AM62x SoC.
> > > > The standby idle state enables the CPU cores to enter WFI through the
> > > > CPUIdle framework.
> > 
> > A very basic question: Default Idle in kernel *is* WFI. So, what kind of
> > savings are we seeing by explicitly enabling a cpuidle state that goes
> > to WFI and more importantly why?
> >
> 
> There is no additional power savings from the added cpuidle state.
> Adding the cpuidle state allows users to use cpuidle to see see stats
> about WFI from userspace.

If you mean how many times the processor hit WFI? mpstat -P ALL 1 ?
cat /proc/uptime (second field)?

Will drop the series for want of better justification to carry these
patches.

-- 
Regards,
Nishanth Menon
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