From: pavel@denx.de (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/2] socfpga: support suspend to ram
Date: Tue, 7 Oct 2014 13:17:15 +0200 [thread overview]
Message-ID: <20141007111715.GB6904@amd> (raw)
In-Reply-To: <1412192304-1209-3-git-send-email-atull@opensource.altera.com>
Hi!
> From: Alan Tull <atull@opensource.altera.com>
>
> Add code that requests that the sdr controller go into
> self-refresh mode. This code is run from ocram.
>
> This patch assumes that u-boot has already configured sdr:
> sdr.ctrlcfg.lowpwreq.selfrfshmask = 3
> sdr.ctrlcfg.lowpwrtiming.clkdisablecycles = 8
> sdr.ctrlcfg.dramtiming4.selfrfshexit = 512
>
> How to suspend to ram:
> $ echo enabled > \
> /sys/devices/soc/ffc02000.serial0/tty/ttyS0/power/wakeup
>
> $ echo -n mem > /sys/power/state
>
> Signed-off-by: Alan Tull <atull@opensource.altera.com>
> +static int __init socfpga_pm_init(void)
> +{
> + if (socfpga_setup_ocram_self_refresh())
> + return -EFAULT;
It would be nice to propagate the error result here.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: Pavel Machek <pavel@denx.de>
To: atull@opensource.altera.com
Cc: dinguyen@opensource.altera.com, linux@arm.linux.org.uk,
yvanderv@opensource.altera.com, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, delicious.quinoa@gmail.com
Subject: Re: [PATCH v2 2/2] socfpga: support suspend to ram
Date: Tue, 7 Oct 2014 13:17:15 +0200 [thread overview]
Message-ID: <20141007111715.GB6904@amd> (raw)
In-Reply-To: <1412192304-1209-3-git-send-email-atull@opensource.altera.com>
Hi!
> From: Alan Tull <atull@opensource.altera.com>
>
> Add code that requests that the sdr controller go into
> self-refresh mode. This code is run from ocram.
>
> This patch assumes that u-boot has already configured sdr:
> sdr.ctrlcfg.lowpwreq.selfrfshmask = 3
> sdr.ctrlcfg.lowpwrtiming.clkdisablecycles = 8
> sdr.ctrlcfg.dramtiming4.selfrfshexit = 512
>
> How to suspend to ram:
> $ echo enabled > \
> /sys/devices/soc/ffc02000.serial0/tty/ttyS0/power/wakeup
>
> $ echo -n mem > /sys/power/state
>
> Signed-off-by: Alan Tull <atull@opensource.altera.com>
> +static int __init socfpga_pm_init(void)
> +{
> + if (socfpga_setup_ocram_self_refresh())
> + return -EFAULT;
It would be nice to propagate the error result here.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2014-10-07 11:17 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-01 19:38 [PATCH v2 0/2] socfpga: fix hotplug/add suspend to ram atull at opensource.altera.com
2014-10-01 19:38 ` atull
2014-10-01 19:38 ` [PATCH v2 1/2] socfpga: hotplug: put cpu1 in wfi atull at opensource.altera.com
2014-10-01 19:38 ` atull
2014-10-07 11:10 ` Pavel Machek
2014-10-07 11:10 ` Pavel Machek
2014-10-07 14:19 ` atull
2014-10-07 14:19 ` atull
2014-10-01 19:38 ` [PATCH v2 2/2] socfpga: support suspend to ram atull at opensource.altera.com
2014-10-01 19:38 ` atull
2014-10-02 21:16 ` atull
2014-10-02 21:16 ` atull
2014-10-07 11:17 ` Pavel Machek [this message]
2014-10-07 11:17 ` Pavel Machek
2014-10-07 14:17 ` atull
2014-10-07 14:17 ` atull
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