From: marek.vasut@gmail.com (Marek Vasut)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/8] ARM: PXA: Z2: Add poweroff function
Date: Fri, 11 Mar 2011 23:16:57 +0100 [thread overview]
Message-ID: <201103112316.57914.marek.vasut@gmail.com> (raw)
In-Reply-To: <201103120012.41014.anarsoul@gmail.com>
On Friday 11 March 2011 23:12:40 Vasily Khoruzhick wrote:
> On Saturday 12 March 2011 00:08:58 Marek Vasut wrote:
> > On Friday 11 March 2011 22:53:11 Vasily Khoruzhick wrote:
> > > On Friday 11 March 2011 23:39:03 Marek Vasut wrote:
> > > > On Friday 11 March 2011 11:23:40 Vasily Khoruzhick wrote:
> > > > > Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
> > > >
> > > > This looks bogus to me as you cannot power down the thing. Besides,
> > > > where do you resume to from this so-called "powerdown" ? Since the
> > > > bootloader will consider it as a legitimate deepsleep resume.
> > >
> > > It eats only 0.7mA in deepsleep, but 6.7mA in sleep (PXA2xx has 2 sleep
> > > modes), so deepsleep is pretty close to poweroff.
> >
> > So the power to the CPU is actually cut? It isn't, right ?
>
> It isn't. But looks like power to memory is cut. But stock bootloader puts
> it in deepsleep to save battery.
Power to memory is cut? How come? You mean rather the refresh is disabled, right
? But anyway, isn't the ram put into self-refresh ?
>
> > Mine (I use mainline uboot) doesn't.
>
> Can you re-check it?
Check what ? Yes I can ...
>
> > PSPR is preserved though, right ? So you end up in a really deep crap I
> > guess ?
>
> Does u-boot check if PSPR is null?
No, it doesn't. But it checks if the device was woken-up or power-on reseted.
>
> Regards
> Vasily
next prev parent reply other threads:[~2011-03-11 22:16 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-11 10:23 [PATCH 1/8] ARM: PXA: Z2: Use only power button as wake source Vasily Khoruzhick
2011-03-11 10:23 ` [PATCH 2/8] ARM: PXA: Z2: Enable OHCI on Zipit Z2 Vasily Khoruzhick
2011-03-11 14:56 ` [PATCH v2 " Vasily Khoruzhick
2011-03-11 21:42 ` Marek Vasut
2011-03-11 21:49 ` Vasily Khoruzhick
2011-03-11 21:50 ` Marek Vasut
2011-03-11 21:55 ` Vasily Khoruzhick
2011-03-11 22:13 ` Marek Vasut
2011-03-11 22:34 ` Vasily Khoruzhick
2011-03-12 0:07 ` Marek Vasut
2011-03-12 11:32 ` Vasily Khoruzhick
2011-03-12 13:28 ` Marek Vasut
2011-03-13 10:18 ` Pavel Machek
2011-03-13 12:29 ` Marek Vasut
2011-03-13 17:10 ` Pavel Machek
2011-03-13 18:34 ` Marek Vasut
2011-03-13 22:15 ` Vasily Khoruzhick
2011-03-11 21:41 ` [PATCH " Marek Vasut
2011-03-11 10:23 ` [PATCH 3/8] ARM: PXA: Z2: Fix battery pdata Vasily Khoruzhick
2011-03-11 21:39 ` Marek Vasut
2011-03-11 10:23 ` [PATCH 4/8] ARM: PXA: Z2: Add mtd partition with logo Vasily Khoruzhick
2011-03-11 21:39 ` Marek Vasut
2011-03-11 22:31 ` Vasily Khoruzhick
2011-03-12 0:05 ` Marek Vasut
2011-03-15 14:39 ` Pavel Machek
2011-03-16 14:11 ` Marek Vasut
2011-03-16 16:51 ` Pavel Machek
2011-03-11 10:23 ` [PATCH 5/8] ARM: PXA: Z2: Add poweroff function Vasily Khoruzhick
2011-03-11 21:39 ` Marek Vasut
2011-03-11 21:53 ` Vasily Khoruzhick
2011-03-11 22:08 ` Marek Vasut
2011-03-11 22:12 ` Vasily Khoruzhick
2011-03-11 22:16 ` Marek Vasut [this message]
2011-03-11 22:30 ` Vasily Khoruzhick
2011-03-12 0:05 ` Marek Vasut
2011-03-12 2:29 ` Eric Miao
2011-03-12 8:06 ` Vasily Khoruzhick
2011-03-12 11:06 ` Marek Vasut
2011-03-12 11:30 ` Vasily Khoruzhick
2011-03-12 13:16 ` Marek Vasut
2011-03-12 20:33 ` Vasily Khoruzhick
2011-03-12 20:35 ` Marek Vasut
2011-03-12 20:34 ` Vasily Khoruzhick
2011-03-12 22:29 ` Marek Vasut
2011-03-15 15:49 ` Eric Miao
2011-03-15 15:57 ` Vasily Khoruzhick
2011-03-15 16:42 ` Eric Miao
2011-03-15 20:11 ` [PATCH v2] " Vasily Khoruzhick
2011-07-05 6:58 ` Eric Miao
2011-03-15 14:41 ` [PATCH 5/8] " Pavel Machek
2011-03-11 10:23 ` [PATCH 6/8] ARM: PXA: Z2: Fix libertas init/tear down sequences Vasily Khoruzhick
2011-03-11 21:37 ` Marek Vasut
2011-03-11 21:41 ` Vasily Khoruzhick
2011-03-11 21:51 ` Marek Vasut
2011-03-11 10:23 ` [PATCH 7/8] ARM: PXA: Z2: Keep kbd backlight disabled by default Vasily Khoruzhick
2011-03-11 21:36 ` Marek Vasut
2011-03-11 10:23 ` [PATCH 8/8] ARM: PXA: Z2: Add default triggers for LEDs Vasily Khoruzhick
2011-03-11 21:36 ` Marek Vasut
2011-03-11 21:43 ` [PATCH 1/8] ARM: PXA: Z2: Use only power button as wake source Marek Vasut
2011-03-13 10:15 ` Pavel Machek
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