On 1/22/2017 5:29 PM, Bryan O'Donoghue wrote: > - DWC_USB3_NUM indicates the number of Device mode single directional > endpoints, including OUT and IN endpoint 0. > > - DWC_USB3_NUM_IN_EPS indicates the maximum number of Device mode IN > endpoints active at any time, including control endpoint 0. > > It's possible to configure RTL such that DWC_USB3_NUM_EPS is equal to > DWC_USB3_NUM_IN_EPS. > > dwc3-core calculates the number of OUT endpoints as DWC_USB3_NUM minus > DWC_USB3_NUM_IN_EPS. If RTL has been configured with DWC_USB3_NUM_IN_EPS > equal to DWC_USB3_NUM then dwc3-core will calculate the number of OUT > endpoints as zero. > > For example a from dwc3_core_num_eps() shows: > [ 1.565000] /usb0@f01d0000: found 8 IN and 0 OUT endpoints > > This patch works around this case by detecting when DWC_USB3_NUM_EPS is > equal to DWC3_USB3_NUM_IN_EPS and over-rides the calculation of the number What if NUM_IN_EPS=7 and NUM_EPS=8? You will still have a problem. It's possible to fix this for the general case rather than for this specific case. Regards, John -- 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
