diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1a632a3faf7f..90f4f9e69b22 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -607,12 +607,14 @@ static int dwc3_gadget_set_ep_config(struct dwc3_ep *dep, unsigned int action) u8 bInterval_m1; /* - * Valid range for DEPCFG.bInterval_m1 is from 0 to 13, and it - * must be set to 0 when the controller operates in full-speed. + * Valid range for DEPCFG.bInterval_m1 is from 0 to 13. + * + * NOTE: The programming guide incorrectly stated bInterval_m1 + * must be set to 0 when operating in fullspeed. Internally the + * controller does not have this limitation. See DWC_usb3x + * programming guide section 3.2.2.1. */ bInterval_m1 = min_t(u8, desc->bInterval - 1, 13); - if (dwc->gadget->speed == USB_SPEED_FULL) - bInterval_m1 = 0; if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && dwc->gadget->speed == USB_SPEED_FULL) |