usb: ci_udc: respect CONFIG_USB_GADGET_DUALSPEED

Force full-speed (12 Mbit/s) operation if CONFIG_USB_GADGET_DUALSPEED
is not defined.

The controller is capable of high-speed (480 Mbit/s) operation,
but some designs may require the use of lower-speed operation.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>

diff --git a/drivers/usb/gadget/ci_udc.c b/drivers/usb/gadget/ci_udc.c
index 2572b346ebfa39c8204aa45912e119ea17104dfd..b0ef35e745a3fd41dff77a6e27cb18f1bf62ce52 100644 (file)
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -777,6 +777,11 @@ static int ci_pullup(struct usb_gadget *gadget, int is_on)
                /* select DEVICE mode */
                writel(USBMODE_DEVICE, &udc->usbmode);
 
+#if !defined(CONFIG_USB_GADGET_DUALSPEED)
+               /* Port force Full-Speed Connect */
+               setbits_le32(&udc->portsc, PFSC);
+#endif
+
                writel(0xffffffff, &udc->epflush);
 
                /* Turn on the USB connection by enabling the pullup resistor */