Re: Omap3430 does not resume after suspend

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Hi Shreyas,

On 2/4/09, Shreyas Mahajan <mahajan.shreyas@xxxxxxxxx> wrote:
>  Hi,
>    Thanks for constantly tolerating my ignorance. I git-cloned the
> latest PM tree available and booted my 3430 LDP board with ldp
> defconfig configuration. Now the problem regarding hanging of machine
> after some small interval is solved but when I done 'echo mem
> >/sys/power/state' it gives error to suspend,
> This is log for it,
>
> '/ # echo mem > /sys/power/state
> <6>PM: Syncing filesystems ... PM: Syncing filesystems ... done.
> done.
> Freezing user space processes ... Freezing user space processes ...
> (elapsed 0.00 seconds) (elapsed 0.00 seconds) done.
> done.
> Freezing remaining freezable tasks ... Freezing remaining freezable
> tasks ... (elapsed 0� )����r$�Powerdomain (core_pwrdm) d1
> Powerdomain (per_pwrdm) didn't enter target state 1
>             �*43
> Could not enter target state in pm_suspendend to debug)
> � 1�ռ���, 森�Ѡr��
> Restarting tasks ... Restarting tasks ... done.%�������� J$�4%�% Ѵ�*43
> done.F�󰯅)������������ J$�4%�% Ѵ�*43
> '
> I searched similar problems on mailing list, in which suspend log
> contains exactly which process could not be stopped as reason to
> suspend failure. But in above log, I could not interpret such a
> reason.
>         Could anyone please help me with this?

Please look into below mail thread on the PM off mode support in l-o list.

http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg08968.html

If you are trying it on SDP , use u-boot mentioned in the above link.


use below settings before running echo mem > /sys/power/state for off mode.

echo 1 > /sys/power/clocks_off_while_idle
echo 1 > /sys/power/voltage_off_while_idle
echo 1 > /sys/power/enable_off_mode


I tried it on my SDP with omap_3430sdp_min_defconfig, I am seeing all
the domains entering to OFF mode.

thanks
Ramesh Gupta G
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