On 2016-09-22 18:46, yfw wrote:
Hi list, I tried to enable the high speed, high bandwidth transfer in device mode for iso type on dwc3 based soc. The platform only supports usb device 2.0. I set the MaxPacketSize to 0x1400 so the host could allocate 3072 bytes for uframe. But when I chain three trbs together, the dwc3 behavior is quite weird:
Why are you using three TRBs for one service interval? Is the data not contiguous? Since, in your case all 3072 bytes belong to one service interval, could just one TRB be used with PktCntM1 set to '2' ? -- 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
