[PATCH v3 2/2] socfpga: support suspend to ram

[Pavel Machek]

On Tue 2014-10-14 14:33:39, atull at opensource.altera.com wrote:
> From: Alan Tull <atull at 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 at opensource.altera.com>

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

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