On Wed, Jun 20, 2012 at 7:53 PM, Kevin Hilman <khilman@xxxxxx> wrote: > "Munegowda, Keshava" <keshava_mgowda@xxxxxx> writes: > >> On Wed, Jun 20, 2012 at 11:53 AM, Munegowda, Keshava >> <keshava_mgowda@xxxxxx> wrote: >>> On Tue, Jun 19, 2012 at 11:32 PM, Kevin Hilman <khilman@xxxxxx> wrote: >>>> "Munegowda, Keshava" <keshava_mgowda@xxxxxx> writes: >>>> >>>>> On Fri, Jun 15, 2012 at 7:17 PM, Jean Pihet <jean.pihet@xxxxxxxxxxxxxx> wrote: >>>>>> Hi Keshava, >>>>>> >>>>>> On Fri, Jun 15, 2012 at 2:04 PM, Munegowda, Keshava >>>>>> <keshava_mgowda@xxxxxx> wrote: >>>>>>> On Tue, Jun 12, 2012 at 6:28 PM, Munegowda, Keshava >>>>>>> <keshava_mgowda@xxxxxx> wrote: >>>>>>>> hi kevin >>>>>>>> now I am using initramfs with kernel linux3.5.rc1, >>>>>>>> but the retention is not working in 3430 sdp. I am seeing the following >>>>>>>> error followed by a crash >>>>>>>> >>>>>>>> >>>>>>>> echo mem > /sys/power/state >>>>>>>> [ 35.609252] PM: Syncing filesystems ... done. >>>>>>>> [ 35.614654] PM: Preparing system for mem sleep >>>>>>>> [ 35.658630] Freezing user space processes ... (elapsed 0.01 seconds) >>>>>>>> done. >>>>>>>> [ 35.689727] Freezing remaining freezable tasks ... (elapsed 0.02 seconds) >>>>>>>> done. >>>>>>>> [ 35.697692] PM: Entering mem sleep >>>>>>>> [ 35.722442] usb usb1: usb auto-resume >>>>>>>> [ 35.726409] ehci-omap ehci-omap.0: resume root hub >>>>>>>> [ 35.775451] hub 1-0:1.0: hub_resume >>>>>>>> [ 35.779846] hub 1-0:1.0: hub_suspend >>>>>>>> [ 35.784240] usb usb1: bus suspend, wakeup 0 >>>>>>>> [ 35.788665] ehci-omap ehci-omap.0: suspend root hub >>>>>>>> [ 35.805786] PM: suspend of devices complete after 99.304 msecs >>>>>>>> [ 35.816497] PM: late suspend of devices complete after 4.364 msecs >>>>>>>> [ 35.831573] PM: noirq suspend of devices complete after 8.331 msecs >>>>>>>> [ 35.838500] Disabling non-boot CPUs ... >>>>>>>> [ 36.312164] Powerdomain (core_pwrdm) didn't enter target state 1 >>>>>>>> [ 36.318481] Could not enter target state in pm_suspend >>>>>>>> [ 36.324859] Unable to handle kernel NULL pointer dereference at virtual >>>>>>>> address 00000018 >>>>>>>> [ 36.333557] pgd = c6280000 >>>>>>>> [ 36.336639] [00000018] *pgd=85c8f831, *pte=00000000, *ppte=00000000 >>>>>>>> [ 36.343414] Internal error: Oops: 17 [#1] SMP ARM >>>>>>>> [ 36.348388] Modules linked in: >>>>>>>> [ 36.351623] CPU: 0 Tainted: G W (3.5.0-rc1 #1) >>>>>>>> [ 36.357574] PC is at _od_resume_noirq+0x14/0x58 >>>>>>>> [ 36.362365] LR is at dpm_run_callback+0x2c/0x74 >>>>>> >>>>>> You need the fix from >>>>>> https://gitorious.org/linux-omap-dss2/linux/commit/9e0ca55fa5d9ff012964a7c7cef8af1b814b2fdb >>>>>> >>>>>> Hope this helps! >>>>>> >>>>>> Regards, >>>>>> Jean >>>>> >>>>> thanks Jean >>>>> I used this patch; this solved the crash issue, but suspend/resume >>>>> is still failing. >>>> >>>> Failing in what way? Did you debug any further? >>>> >>>> It may be failing because of problems with the USB host driver, which is >>>> what I'm needing you to debug. >>> >>> The suspend/resume was failing even without USB in the mainline kernel image. >>> >>>> >>>> I'm convinced now that these USB host PM changes were not very well >>>> tested at all as they seem to be causing a variety of different problems >>>> on my boards: faults during boot, preventing CORE idle retention, >>>> hanging suspend/resume. >>>> >>>> Anyways... >>>> >>>> To get current l-o master to succesfully suspend/resume, you need 3 things: >>>> >>>> 1) the DSS fixes that Jean mentioned above (these are merged in >>>> v3.5-rc3, but not yet into l-o master) >>>> 2) disable USB host: set CONFIG_MFD_OMAP_USB_HOST=n >>>> 3) for for 32k timer which is also preventing CORE retention >>>> http://marc.info/?l=linux-omap&m=134000053229888&w=2 >>>> >>>> With that setup on top of current l-o master, suspend/resume is working >>>> for me on several OMAP3/4 platforms. >>>> >>>> Kevin >>> >> >> I tired the linux2.3.5.rc2 + DSS fixes + sync 32k timer fix without USB >> on beagle XM. > > I suggested using l-o master as a baseline, not -rc2. > > I just pushed a branch with this baseline so we are sure to be testing > the same baseline. Please use the 'tmp/test/usb-host' branch from my > tree[1] as the starting point. > > Build using omap2plus_defconfig, boot, then suspend/resume and send the output > of 'cat /debug/pm_debug/count' > > This baseline is working fine for me on 3430/n900, 3530/Overo and > 3630/Beagle-xM. > > Kevin > > [1] git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux.git I did the clone of this , But I am not seeing the branch 'tmp/test/usb-host' I am seeing only the branch /wip/arm-nohz-cpusets other than master. I didn't any usb-host branch here too: http://git.kernel.org/?p=linux/kernel/git/khilman/linux.git;a=summary regards keshava -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
