Thank you Jiri for finding the related patch. On Fri, Feb 23, 2024 at 07:42:06AM +0100, Jiri Slaby wrote: > Does it magically start working if you set 422/485 manually via TIOCSRS485? > But I doubt SER_RS485_ENABLED is set anywhere... > > Crescent how are these 422/485 devices supposed to work? > > Oh wait, you may need: > commit 43f012df3c1e979966524f79b5371fde6545488a > Author: Crescent CY Hsieh <crescentcy.hsieh@xxxxxxxx> > Date: Thu Dec 14 14:02:34 2023 +0800 > > tty: serial: 8250: Set RS422 interface by default to fix Moxa > RS422/RS485 PCIe boards This patch should fix this issue, please let me know if it doesn't. Perhaps, manually setting RS422/RS485 via TIOCSRS485 could also fix that, however, the patch of switching interface is not ready for submitting yet. --- Sincerely, Crescent Hsieh
