"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 -- 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
