[U-Boot] [PATCH 1/3] sysreset: switch to using SYSRESET_POWER_OFF for poweroff

Kever Yang kever.yang at rock-chips.com
Fri Jul 26 07:37:42 UTC 2019


Hi Urja and Simon,

Does this patch still needed? Since this patch delegate to u-boot-rockchip
maintainer Philipp now,
I would like to know what should I do for this patch.

Thanks,
- Kever

Patrick DELAUNAY <patrick.delaunay at st.com> 于2019年5月20日周一 下午9:38写道:

> Hi Urja,
>
> >
> > Hi,
> >
> > On Thu, May 16, 2019 at 7:44 AM Patrick DELAUNAY
> > <patrick.delaunay at st.com> wrote:
> > >
> > > Hi Urja,
> > >
> > > > -     if (type != SYSRESET_POWER)
> > > > +     if (type != SYSRESET_POWER_OFF)
> > > >               return -EPROTONOSUPPORT;
> > >
> > > In fact in the next part of the code, we are supporting only
> > > SYSRESET_POWER (reset with PMIC1 switch OFF and restart) and not
> > > SYSRESET_POWER_OFF....
> > >
> > > because Power Cycle if RREQ_EN=1
> > >
> > > I think you need to remove the update on this file for your patch and
> > > I will modified this function is to support both mode....
> > Okay I will drop this part, but just to confirm... this means that
> currently you have
> > a configuration where using the poweroff command causes a power-cycle?
> Neat.
>
> Yes and it was stange.
>
> I choose it at the beginning of the project because for some hardware
> configuration with STPMIC1, the VDD continue to be provided by the cell
> even
> if the power supply is still present in power off mode; HW team ask me to
> avoid this case,
> to avoid the cell usage.
>
> But it is more a workaround for the bad HW configuration, and I forget
> this point when I upstream the driver...
>
> Your patch allow me to correct this point now (with
> http://patchwork.ozlabs.org/patch/1101856/) and
> I come back to a normal behavior in the driver : driver execute the
> requested command.
>
> Regards
> Patrick
>
> > --
> > Urja Rannikko
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