Hi On 06/28/2013 01:46 PM, Roger Quadros wrote: > On 06/28/2013 02:33 PM, Michael Trimarchi wrote: >> Hi Roger >> >> On Thu, Jun 27, 2013 at 11:07:11PM +0300, Ruslan Bilovol wrote: >>> On Thu, Jun 27, 2013 at 10:24 PM, Michael Trimarchi >>> <michael@xxxxxxxxxxxxxxxxxxxx> wrote: > >>> Do you have locks around this software workaround? >>> The patch I did against 3.4 linux kernel may be helpful for >>> you in such case: http://review.omapzoom.org/28515 >>> Another patch extends this WA for all OMAP4 SoCs: >>> http://review.omapzoom.org/31108 >> >> I'm testing using pm_test and stop to core (5ms and not 5 seconds) (usb suspend cycle are done correctly) so >> the problem could be: >> >> 1) SAR usb context restore. I have applied the SAR workaround but the core doesn't go in full retantion >> could be it a problem? > > If core doesn't go in to OFF then SAR will not come into play. Are you still affected by the > issue if OFF mode is disabled? If yes then it probably is not related to SAR. > >> >> 2) idle status of ulpis pins? > > Yes this can be possible. > > When you said earlier that the problem doesn't happen when one of the ULPIs is used > did you try both of them individually. e.g. case 1: port 1 only enabled, > case 2: port 2 only enabled. > > Did it work in both the cases? off state of the line can make the situation worst ;). What are the idle/off state of the lines on your platforms? I can use PAD_REMUX flag to change the datax and signal of each port. I think that when the core is in RET_OFF the signal lines are remuxed in off mode. Correct? Michael > > cheers, > -roger > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
