lkml.org 
[lkml]   [2014]   [Oct]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 2/2] socfpga: support suspend to ram
On Tue 2014-10-14 14:33:39, atull@opensource.altera.com wrote:
> 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>

Acked-by: Pavel Machek <pavel@denx.de>

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


\
 
 \ /
  Last update: 2014-10-15 10:21    [W:0.243 / U:0.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site