Has anyone gotten this working? I'm trying to build a project where the Sitara chip's UART4 is talking to another serial input at 38400, with RTS/CTS flow control. I've muxed the pins right, I've got the latest omap-serial driver, and it's pretty clear to me on the scope that the chip is simply ignoring the CTS signal and sending while it is not asserted. I can find dozens of complaints about this on Google, but not a single person claiming to have made it work.
Has this ever worked, or is the chip's claimed support for rts/cts just hot air?