RE: [PATCH 1/2] scsi: ufs: Add DeepSleep feature

[Avri Altman]

> 
> 
> On 5/10/20 11:02 am, Avri Altman wrote:
> > HI,
> >
> >> Drivers that wish to support DeepSleep need to set a new capability flag
> >> UFSHCD_CAP_DEEPSLEEP and provide a hardware reset via the existing
> >>  ->device_reset() callback.
> > I would expect that this capability controls sending SSU 4, but it only controls
> the sysfs entry?
> 
> The sysfs entry is the only way to request DeepSleep.
Some chipset vendors use their own modules, or even the device tree
to set their default rpm_lvl / spm_lvl.

Thanks,
Avri