On Thu, Sep 05, 2024 at 10:15:12AM +0200, Radisson97@xxxxxx wrote: > Hi, i am new to this list because i have a strange problem. > > We have an embedded board based on the omap3-design with a rs485. > With kernel 3.5 it works fine. Since 3.5 is ancient we are noe trying > to get a new kernel up an running what is 5.8. Any specific reason why 5.8? That too is ancient and obsolete and not supported by anyone. > I turns out that the rs485 has issues (it seems a lot of ppl have > the same issue also with other boards). We enable the rs485 via ioctl() > and nothing seems to work. Several restarts, playing with Marcin Niestroyj's > rs485config it suddenly works. (yes hardware is ok, works with older kernel). So it does work? What exact hardware and drivers are you using? And can you try a modern and supported kernel version please? We can't do anything with 5.8 :( thanks, greg k-h
