Roger Quadros <ext-roger.quadros@xxxxxxxxx> writes: > Roger Quadros wrote: >> ext Roger Quadros wrote: >>> ext Kevin Hilman wrote: >>>> Roger Quadros <ext-roger.quadros@xxxxxxxxx> writes: >>>> >>>>> ext Roger Quadros wrote: >>>>>> ext Kevin Hilman wrote: >>>>>>> Roger Quadros <ext-roger.quadros@xxxxxxxxx> writes: >>>>>>> >>>>>>>> Hi Kevin, >>>>>>>> >>>>>>>> Off mode does not seem to work on RX51 on latest PM branch. I get a >>>>>>>> reboot if I set enable_off_mode and sleep_while_idle and I wait for >>>>>>>> timeout. >>>>>>>> >>>>>>>> Does it work on other platforms? >>>>>>>> >>>>>>> Yes, I tested on SDP, omap3evm, Beagle, Overo and RX51. >>>>>>> >>>>>>> On RX51, I'm using omap3_pm_defconfig with the debug UART changed to >>>>>>> UART3 and things work fine here. >>>>>>> >>>>>>> I using rootfs from latest fiasco image, and it drops me into >>>>>>> an early >>>>>>> shell because /sbin/preinit fails in various ways. Note that >>>>>>> I'm using >>>>>>> an S2.0 GP board. Note also that I modified /sbin/preinit to launch >>>>>>> another getty on ttyS2 so I get a shell since newer kernels >>>>>>> ignore the >>>>>>> ATAGs passed by nolo. >>>>>>> >>>>>>> Below is a console log of my boot so you can see what is going on. >>>>>>> Because /sbin/preinit enables off-mode and sleep_while_idle, I just >>>>>>> let it boot and it seems to work. >>>>>>> >>>>>>> Kevin >>>>>>> >>>>>> I am having S2.1 board and it does not work on that. It gets locked >>>>>> up and restarts after idle timeout. >>>>>> But I checked that it works on S2.0 board. >>>>>> >>>>>> Any clue what could be the problem? >>>>>> >>>>>> -roger >>>>>> -- >>>>>> 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 >>>>>> >>>>> Kevin, >>>>> >>>>> I have some new observations. >>>>> >>>>> It works only if we load the kernel via USB. Instead, if we flash the >>>>> kernel, it will not work even with S2.0 board. It boots to shell but >>>>> after sleep timeout (5 seconds) console gets locked up and it reboots >>>>> after a while. >>>> >>>> Roger, >>>> >>>> Does this happen even with the working defconfig you sent the other day? >>>> >>>> Kevin >>> >>> The config that i sent does not work with S2.0 hardware in either case. >>> It works with S2.1 hardware only in one case i.e. kernel load via >>> USB. It does not work if kernel is flashed. >>> Also when my config is used on S2.1, core always remains in ON mode >>> and never hits RET/OFF mode. >>> >>> -roger >> >> Kevin, >> >> I just found out that it has nothing to do with kernel load via USB >> or not. I was using an initrd while USB load which used to change >> vdd1 OPP, that's why it was working. >> >> So the final conclusion is, after boot to shell, if we change VDD1 >> OPP, then off mode works fine on my S2.0 HS board. >> e.g. >> echo 1 > /sys/power/vdd1_opp >> echo 1 > /sys/power/sleep_while_idle >> echo 1 > /sys/power/enable_off_mode >> >> It works on S2.1 board too except that garbage characters are >> printed on console after idle timeout. >> >> Does this give any more clue to the problem? >> >> -roger >> > > Hi Kevin, > > What compiler version do you use? > I currely use CSL 2008q3, but am switching to 2009q1-161 Kevin -- 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
