On Tue, 23 Aug 2016, Wenyou Yang wrote: > The usb controller does not manage correctly the suspend mode for > the ehci. In echi mode, there is no way to suspend without any > device connected to it. This is why this specific control is added > to fix this issue. Since the suspend mode works in ohci mode, this > specific control works by suspend the usb controller in ohci mode. > > This specific control is by setting the SUSPEND_A/B/C fields of > SFR_OHCIICR(OHCI Interrupt Configuration Register) in the SFR > while the OHCI USB suspend. > > This set operation must be done before the USB clock disabled, > clear operation after the USB clock enabled. > > Signed-off-by: Wenyou Yang <wenyou.yang@xxxxxxxxx> > Reviewed-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxxxxxxxxx> > Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx> > --- > > Changes in v7: > - Rename ohci_at91_port_ctrl() to ohci_at91_port_suspend(). > - Add check valid_port(wIndex) before invoke > ohci_at91_port_suspend(). > - Call ohci_at91_port_suspend() directly on suspend/resume > operations. Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> -- 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
