Hi Roger On Thu, Jul 4, 2013 at 10:53 AM, Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx> wrote: > Hi > > On 07/02/2013 05:03 PM, Roger Quadros wrote: >> >> On 07/02/2013 05:49 PM, Michael Trimarchi wrote: >>> Hi Roger >>> >>> On 07/02/2013 04:42 PM, Roger Quadros wrote: >>>> On 06/28/2013 07:47 PM, Michael Trimarchi wrote: >>>>> Hi >>>>> >> I'm working on PM consumption of other subsystem because it's a very complex device. Right now the pm consumption is sleep mode is 6mA just for (off mode disabled) omap4 + LPDDR2 and TWL6032 I don't exactly know if they have updated the last bootloader but I think so. I have tried to work on STP signal and re-enable it just before resume but nothing change Anyway my idea is the problem is releated on 18clk counter and an invalid state of the hw. I will try to implement save & restore register by hand instead using the sar. Michael >>>>>> >>>>>> 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? >>>>> >>>>> Yes, so I don't think could be a problem of ulpi pins and why this happen >>>>> on both at the same time? Seems more connected to somenthing else. >>>>> >>>> >>>> Right. Seems to be related to two things. OFF Mode and 2 ports being used simultaneously. >>>> >>>> I'm not sure how to go about fixing this. How important is OFF Mode for your application. >>>> Can you keep it always disabled? >>>> >> >> >>> >>> Right now I delivery without off mode. I will try to fix in long run the usb and I think that it could be a good platform to test omap4 mainline. >>> >> >> Yes, our aim is to get it working with mainline as well. >> >>> Last question: >>> If one domain is in RET mode and not OFF mode what happen during SAR restore in OFF mode? >>> >> >> SAR restore will only happen when the Device enters OFF mode. >> >> Device OFF mode can only be reached when all voltage domains are switched OFF and that would depend >> if all power domains entered OFF or not. Just a simplistic explanation. You can refer to chapter >> "3.9.3 Device OFF State Management" in the TRM. > > What happen if we ask to go in off mode for all domains but one doesn't go in off mode so the device > will not go in off mode and the sar will not be used? How can work the restore? > >> > > I have added a check of CM_RESTORE_ST. This register need to be clear before > going in OFF mode and then show if the status of phase1 2a and 2b is completed. > So before proceed with system resume and after resetting OFF_MODE bit I have tried to wait on this register, > but without success. > > 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
