linux-kernel - Re: [PATCH 3/4] powerpc: pm: add EPU FSM configuration for deep sleep

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <1438636971.2097.66.camel@freescale.com>
Date:	Mon, 3 Aug 2015 16:22:51 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Chenhui Zhao <chenhui.zhao@...escale.com>
CC:	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
	<Jason.Jin@...escale.com>
Subject: Re: [PATCH 3/4] powerpc: pm: add EPU FSM configuration for deep
 sleep

On Mon, 2015-08-03 at 20:01 +0800, Chenhui Zhao wrote:
> On Sat, Aug 1, 2015 at 8:41 AM, Scott Wood <scottwood@...escale.com> 
> wrote:
> > On Fri, 2015-07-31 at 20:53 +0800, Chenhui Zhao wrote:
> > >  In the last stage of deep sleep, software will trigger a Finite
> > >  State Machine (FSM) to control the hardware precedure, such as
> > >  board isolation, killing PLLs, removing power, and so on.
> > > 
> > >  When the system is waked up by an interrupt, the FSM controls the
> > >  hardware to complete the early resume precedure.
> > > 
> > >  This patch configure the EPU FSM preparing for deep sleep.
> > > 
> > >  Signed-off-by: Chenhui Zhao <chenhui.zhao@...escale.com>
> > >  ---
> > >   arch/powerpc/platforms/85xx/Makefile    |   2 +-
> > >   arch/powerpc/platforms/85xx/sleep_fsm.c | 256
> > >  ++++++++++++++++++++++++++++++++
> > >   arch/powerpc/platforms/85xx/sleep_fsm.h | 104 +++++++++++++
> > >   3 files changed, 361 insertions(+), 1 deletion(-)
> > >   create mode 100644 arch/powerpc/platforms/85xx/sleep_fsm.c
> > >   create mode 100644 arch/powerpc/platforms/85xx/sleep_fsm.h
> > 
> > When I asked why this was in drivers/platform[1], you said it was to 
> > share
> > with LS1, and that the values used were the same -- so why did you 
> > move it to
> > arch/powerpc?
> 
> There are some changes. LS1 will use PSCI (Power State Coordination 
> Interface) to implement deep sleep. So these code just used by PowerPC.

Then remove the comment about the values being usable on ls1021.

-Scott

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/