When using a localparam for the width of a input/output signal the tools
won't be able to infer the size of the signal. This results in the signal
always being only 1 bit wide which causes the design to not work.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Always using 128bit for the input word unnecessarily increases the DMA
alignment requirements. This breaks existing software which assumes that the
DMA alignment requirement is 64bit.
So make it configurable whether we want 8 or 4 channels and while we are at
it also make the channel width configurable.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>