Re: [Gumstix-users] Gumstix Overo Won't Stay in Sleep Mode

[<cod...@gm...>]

How do I get the latest PM branch?  I don't even know what branch we are
using.  I just followed the 'setting up a build environment' instructions on
gumstix.net.

Then I'll also have to figure out how to build a kernel.  I thought the
kernel would have come with power management by default.

On Fri, Mar 19, 2010 at 1:17 PM, Matt Singer <ms...@ea...> wrote:

>  Its part of the kernel build... arch/arm/mach-omap2/board-overo.c
>
> You need to get the latest PM branch code and build your own kernel.
>
>  ------------------------------
> *From:* cod...@gm... [mailto:cod...@gm...]
> *Sent:* Friday, March 19, 2010 12:31 PM
>
> *To:* General mailing list for gumstix users.
> *Subject:* Re: [Gumstix-users] Gumstix Overo Won't Stay in Sleep Mode
>
> root@overo:# uname -a
> Linux overo 2.6.29-omap1 #1 Mon Jun 8 13:06:55 EDT 2009 armv7l GNU/Linux
>
> I've heard people mention board-overo.c before, but I've never been able to
> find it on my system.  We're using GPIO 114 as a button right now, actually
> several buttons on different GPIOs.
>
> So basically I have to pick a GPIO I want to use as a wakeup and configure
> it as such in board-overo.c?  Where can I find board-overo.c?  Is that part
> of u-boot?
>
> On Fri, Mar 19, 2010 at 9:28 AM, Matt Singer <ms...@ea...>wrote:
>
>>  I haven't been able to get it to wakeup on GPIO0.  I think it probably
>> in the mux settings.  I'm not using an LCD so I'm using GPIO 114 instead and
>> that works fine.  You have to enable the GPIO pin as a wakeup source in
>> board-overo.c .
>>
>> What kernel version are you using?
>>
>>  ------------------------------
>> *From:* cod...@gm... [mailto:cod...@gm...]
>> *Sent:* Thursday, March 18, 2010 1:13 PM
>> *To:* General mailing list for gumstix users.
>> *Subject:* [Gumstix-users] Gumstix Overo Won't Stay in Sleep Mode
>>
>>   Hello,
>>
>> I have recently been looking into power management on the Gumstix Overo
>> Earth.  From what I've read, you can 'echo mem > /sys/power/state' on the
>> commandline to put the system to sleep.  This seems to work.  However, the
>> system immediately wakes up.  I've tried this both on the Desktop image that
>> shipped with the Gumstix, and a console image that was built on an SD card.
>> In both cases, I'm running the 'echo mem...' command through the USB console
>> port.  How can I get the system to stay asleep?  Also, once it stays asleep,
>> as I understand it, GPIO0 can be used to wake it up.  Would that just
>> involve shorting GPIO0 (pin 13 on the 40-pin header) to a 1.8v line (pin 16
>> on the 40-pin) to wake the system up?
>>
>> Here is the output when I try to enter sleep:
>>
>> root@overo:/sys/power# echo mem > state
>> PM: Syncing filesystems ... done.
>> Freezing user space processes ... (elapsed 0.00 seconds) done.
>> Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
>> Suspending console(s) (use no_console_suspend to debug)
>> Class driver suspend failed for cpu0
>> Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0000
>> done.
>> mmc0: mmc_rescan - card ocr from io_op=0x00000000, err = -110
>> root@overo:/sys/power#
>>
>>  No virus found in this incoming message.
>> Checked by AVG - www.avg.com
>> Version: 9.0.791 / Virus Database: 271.1.1/2754 - Release Date: 03/18/10
>> 03:33:00
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Download Intel&#174; Parallel Studio Eval
>> Try the new software tools for yourself. Speed compiling, find bugs
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>> See why Intel Parallel Studio got high marks during beta.
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>> _______________________________________________
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>>
>>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 9.0.791 / Virus Database: 271.1.1/2754 - Release Date: 03/19/10
> 03:33:00
>
>
>
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> gumstix-users mailing list
> gum...@li...
> https://lists.sourceforge.net/lists/listinfo/gumstix-users
>
>