DMA Timeout

[jordanhenry]

Hi,

I tried the xdma.c module with a loopback on AXI DMA IP and it generates a timeout when I use xdma-test.c :

file: open()
ioctl: XDMA_TEST_TRANSFER
test: rx buffer before transmit:
Y Y Y Y Y Y Y Y Y Y
test: xdma_start_transfer rx
test: xdma_start_transfer tx
test: time to prepare DMA channels [us]: 6432
Error: transfer timed out
test: DMA transfer time [us]: -6322
test: DMA bytes sent: 1048576
test: DMA speed in Mbytes/s: -165
test: rx buffer after transmit:
Y Y Y Y Y Y Y Y Y Y
ran driver test transition: use 'dmesg' to view results
file: close()

CMA is selected and I added cma=64M.

Thanks
Jo