Messages in this thread | | | Date | Tue, 7 Oct 2014 13:17:15 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH v2 2/2] socfpga: support suspend to ram |
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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
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