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- Rework how we allocate and free USB host channels, so that we only allocate a channel if there is a real packet going out on the USB cable. - Use BULK type for control data and status, due to instabilities in the HW it appears. - Split FIFO TX levels into one for the periodic FIFO and one for the non-periodic FIFO. - Use correct HFNUM mask when scheduling host transactions. The HFNUM register does not count the full 16-bit range. - Correct START/COMPLETION slot for TT transactions. For INTERRUPT and ISOCHRONOUS type transactions the hardware always respects the ODDFRM bit, which means we need to allocate multiple host channels when processing such endpoints, to not miss any so-called complete split opportunities. - When doing ISOCHRONOUS OUT transfers through a TT send all data payload in a single ALL-burst. This deacreases the likelyhood for isochronous data underruns. - Fixed unbalanced unlock in case of "dwc_otg_init_fifo()" failure. - Increase interrupt priority. MFC after: 2 weeks
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