Sekhar, On 02/09/2011 01:58 PM, Nori, Sekhar wrote: > Hi Mike, > > On Sat, Feb 05, 2011 at 02:32:55, Michael Williamson wrote: >> On 2/4/2011 12:15 PM, Steve Chen wrote: >> >>> On Fri, Feb 4, 2011 at 10:52 AM, Nori, Sekhar <[email protected]> wrote: >>>> Hi Steve, >>>> >>>> On Fri, Feb 04, 2011 at 21:42:41, Steve Chen wrote: >>>> >>>>>> rtcwake -s 40 rtc0 >>>>> rtcwake: /dev/rtc not enabled for wakeup events >>>> >>>> I have a feeling rtcwake is looking at the wrong device >>>> node. Can you try: >>>> >>>> $ rtcwake -d /dev/rtc0 -s 20 -m mem >>>> >>> >>> Doh!!. Sekhar, you are right. I did not include the "-d" flag. >>> After passing the correct parameter to rtcwake, I'm able to wake up >>> from sleep with NFS rootfs. I'm running the kernel/filesystem from >>> PSP 03.20.00.14. >>> >> >> >> I was wondering if you (or anyone) have numbers for how much power the >> AM1808 you have is drawing while sleeping? I was able to run the same >> command as above with an AM1808 module here today, and the power draw >> I am seeing by the module was still pretty high. About 1/2 normal >> operation, but still pretty high. > > Were you able to wake-up successfully back from suspend during > this test? I want to make sure you actually hit DeepSleep and did > not crash somewhere on the way to it. >
Well, turns out when I ran that test I was running a branch off of the arago l138 kernel PSP. I didn't realize it until this morning. Sorry for the confusion. I bounce between the two too many times in the span of a day. On the mainline, my 1808 unit hangs entering sleep. So I think there may indeed be something different / problematic there. I haven't had a chance to get back to it yet to make sure I didn't have a bad config or something, but I don't think I did. While running off of the PSP branch, it does appear to enter sleep (console messages look sane, no oops, etc.) and it does appear to wake up on the timer I configure. I was able to cycle through this multiple times without rebooting and run other apps / code in between cycles, etc. Is there a log level or debug level that I can turn on to confirm actually making it to deepsleep? -Mike > Thanks, > Sekhar > _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
