Messages in this thread | | | Date | Tue, 7 Oct 2014 09:17:34 -0500 | From | atull <> | Subject | Re: [PATCH v2 2/2] socfpga: support suspend to ram |
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On Tue, 7 Oct 2014, Pavel Machek wrote:
> 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.
Hi Pavel,
Yes, good catch.
Thanks, Alan
> > Best regards, > Pavel > -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html >
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