Originally Posted by knc1
More than you ever wanted to know about that driver:
@GeekMaster: Yes, it does support 460800 (directions, lines: 1080++)
And it looks to me as if that latency timer is set in units of milliseconds, but I did not study, only scaned the driver code.
So perhaps we can use that "ground" wire to tell it to stop sending. It needs pacing. In u-boot, there are periodic chunks of missing data in large output spurts. I wonder if that wire is implemented in u-boot though, but it is worth testing.