linux-kernel - Re: [PATCH v3] firmware/psci: add support for SYSTEM

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Message-ID: <CAPDyKFrM8hc36vp=2h1CHBZKapy1q242JD3Y5SfrCg-KWA-twg@mail.gmail.com>
Date:   Fri, 12 Apr 2019 14:37:05 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Sudeep Holla <sudeep.holla@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Mark Rutland <mark.rutland@....com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Aaro Koskinen <aaro.koskinen@...ia.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Florian Fainelli <f.fainelli@...il.com>,
        Michal Simek <michal.simek@...inx.com>
Subject: Re: [PATCH v3] firmware/psci: add support for SYSTEM_RESET2

Sudeep, Lorenzo, Mark

On Fri, 12 Apr 2019 at 12:15, Sudeep Holla <sudeep.holla@....com> wrote:
>
> On Fri, Apr 12, 2019 at 12:10:45PM +0200, Rafael J. Wysocki wrote:
> > On Friday, April 12, 2019 12:02:27 PM CEST Sudeep Holla wrote:
> > > PSCI v1.1 introduced SYSTEM_RESET2 to allow both architectural resets
> > > where the semantics are described by the PSCI specification itself as
> > > well as vendor-specific resets. Currently only system warm reset
> > > semantics is defined as part of architectural resets by the specification.
> > >
> > > This patch implements support for SYSTEM_RESET2 by making using of
> > > reboot_mode passed by the reboot infrastructure in the kernel.
> > >
> > > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
> > > Acked-by: Mark Rutland <mark.rutland@....com>
> > > Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> > > ---
> > >  drivers/firmware/psci.c   | 24 +++++++++++++++++++++++-
> > >  include/uapi/linux/psci.h |  2 ++
> > >  2 files changed, 25 insertions(+), 1 deletion(-)
>
> [...]
>
> > > --
> >
> > So I queued up the PSCI series from Ulf which clashes with this patch.
> >
>
> Ah OK, I wasn't aware(just back from holiday) that it's going through
> your tree. No worries, I will rebase and repost soon. I want testing
> by xilinx or Aaro Koskinen before that.
>
> > I can take this one too, but I'd rather avoid becoming a PSCI maintainer as a
> > result. :-)
> >
>
> I can understand, I assure it's one off :)

Speaking about that. I would gladly help out to host a git tree to
collect patches that you have acked. In this way, we can, for example,
get the patches pre-tested in linux next before we send the
pull-request.

If you think sounds like a good idea, just tell me so I can prepare a
tree for the next release cycle...

Kind regards
Uffe