* Tony Lindgren <t...@atomide.com> [131010 09:09]: > * Roger Quadros <rog...@ti.com> [131010 06:32]: > > > > I tried testing this with the USB EHCI driver, but I'm not getting wake up > > interrupts > > while the system is still running and only the EHCI controller is runtime > > suspended. > > > > It seems we need to somehow call _reconfigure_io_chain() to update the > > daisy chain > > whenever the pad wakeup_enable bit is changed. > > Sounds like this is on omap3? Have you tried calling pcs_soc->rearm() in the > pcs_irq_handle() like the comments there suggest? At least for me that keeps > the wake-up interrupts continuously running on omap3 instead of just idle > modes. > > Now on omap4, I've noticed the wake up interrupts are on all the time based > on tests > with the serial driver.
Oh, and if you're runtime suspending EHCI only, and if the EHCI module has wake-up registers, it should be able to wake EHCI from retention on it's own without a need for the io chain at all. At least the serial driver does that if it's internal wake-up registers are configured right. But for off-idle, the serial driver needs the io chain wake-up events. Regards, Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
