I received IMX6SLEVK and try to bring up u-boot working for it. I compiled U-Boot from Denx site for this board.
I see that U-Boot send debug output to debug UART, via serial console on my Linux PC but i can't sent anything back. TX line doesn't work....even i tri to see with oscilloscope - no data from FT232RQ TX pin.
Maybe the problem in ftdi_sio driver in mt PC? I'm using kernel 2.6.39, so i took driver from 3.4 branch and put it in my current kernel. The reason the same - no TX data.
I checked Android's images from cards that shipped with board, but had same situation.
Why that can happen?
Solved! Go to Solution.
Yes, seems the problem was in flow control.
It is very strange....cu doesn't have flow control options and i use it whithout such problems with other devices.
In fact i tried minicom and it worked better.