* Ran Shalit <ranshalit@xxxxxxxxx> [141117 11:48]: > >You need to look if you have some devices blocking deeper > >idle states in cm_idlest*_core and cm_idlest_per registers. > > >The device will automatically idle whatever it can if there > >are no blockers. I believe at least EHCI still is blocking, > >and MUSB if configured and cable connected. > > I'll check the registers value, should I then try to modify this > registers in order to get into retention ? No, those are read-only status registers. You need idle the drivers that show as blocking in those registers. > I will still have to disable serial right ? Maybe some kernel process > which run in background prevents retention ? Yes otherwise the UART bits will show as blocking in those registers. > Is there some simple way to debug this or do I need to modify these registers ? Just printing them out in the idle loop most likely will give you the info you need. Regards, Tony -- 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
