---------- Forwarded message ----------
From: Shreyas Mahajan <mahajan.shreyas@xxxxxxxxx>
Date: Wed, Feb 4, 2009 at 12:59 PM
Subject: Re: Omap3430 does not resume after suspend
To: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
But the problem is I am using 3430 ldp board, and sdp board is not
available to me.
I used omap_ldp_defconfig and got error while attempting 'echo mem>
/sys/power/state'
How can I do it on LDP board? Does this work for LDP board?
Thanks,
Shreyas.
On Wed, Feb 4, 2009 at 12:31 PM, Kevin Hilman
<khilman@xxxxxxxxxxxxxxxxxxx> wrote:
> Ramesh Gupta Guntha <grgupta77@xxxxxxxxx> writes:
>
>> 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.
>>
>
> In addition to above, I suggest you turn of CONFIG_DEBUG_LL as well as
> that will clutter up your serial console with garbage during
> suspend/resume.
>
> Kevin
>
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