Tool/software:
In the USB sample code for DMA mode (pdk_am335x_1_0_17\packages\ti\drv\usb\soc\am335x\cppi41dma.c), there is a process in the Cppi41DmaProcessBD function to set 1 to bit 31 of Word 6 of the DMA descriptor. Without this processing, the DMA transfer completion interrupt will not occur.
In the chip specifications (spruh73q.pdf: Table 16-15. Packet Descriptor Word 6 (PD6) Bit Field Descriptions), bit 31 is listed as Reserved, but is there some role assigned to it?
best regards
