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 2572b34..b0ef35e 100644
--- a/drivers/usb/gadget/ci_udc.c
+++ b/drivers/usb/gadget/ci_udc.c
@@ -777,6 +777,11 @@
/* 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 */