diff options
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e5a383407a2..477ecd02098 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1631,8 +1631,25 @@ usb_ep *dwc3_gadget_match_ep(struct usb_gadget *gadget, return dwc3_find_ep(gadget, "ep1in"); if (usb_endpoint_is_bulk_out(desc)) return dwc3_find_ep(gadget, "ep2out"); - if (usb_endpoint_is_int_in(desc)) + if (usb_endpoint_is_int_in(desc)) { + /* + * Special workaround for NXP UUU tool in SPL. + * + * The tool excepts the interrupt-in endpoint to be ep1in, + * otherwise it crashes. This is a result of the previous + * hard-coded EP setup in drivers/usb/gadget/epautoconf.c + * which did special-case EP allocation for SPL builds, + * and which was since converted to this callback, but + * without the special-case EP allocation in SPL part. + * + * This reinstates the SPL part in an isolated manner, + * only for NXP iMX SoCs, only for SPL builds, and only + * for the ep1in interrupt-in endpoint. + */ + if (IS_ENABLED(CONFIG_MACH_IMX) && IS_ENABLED(CONFIG_XPL_BUILD)) + return dwc3_find_ep(gadget, "ep1in"); return dwc3_find_ep(gadget, "ep3in"); + } return NULL; } |