Hi William, Am 17.01.19 um 03:02 schrieb William Jacobs: > I am looking for help getting serial communication to work via the UART on > either a Raspberry PI 3 B or a 3 B + that is running Fedora 29. The kernel > recognizes the UART as /dev/ttyS1 on these systems. Data flows, but it is > corrupted at random intervals. This happens at any baud rate. With these > same two computers, everything works fine if I run Debian, which I really > don't like. So it is not a hardware issue. I am thinking it is more of a > device tree problem.
i assume the root cause is the experimental cpu frequency driver. So either you blacklist this driver or use /dev/ttyAMA0 which doesn't depend on VPU clock. Best regards Stefan > > I also have UART to USB adapters that the kernel recognizes ad /dev/ttyUSB0. > When using these under Fedora there is no corrupted data. > > I would mention that I also have Fedora running nicely on a Quad Core i.MX6 > based Hummingboard2. On that UART, there is no corrupted data issue. > > For my project, I really would like to use Fedora and have good communication > via the Raspberry PI UART. Is anyone here successfully using the UART on the > Raspberry PI 3 B or 3 B +? > > One final thing to mention, I do not have the console enabled on /dev/ttyS1. > If I do enable it, I get the corrupted data when trying to log in or look at > console output via a serial connection. > > Any help would be greatly appreciated even if it just to tell me what to go > read. > > Thanks, > Will _______________________________________________ arm mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected]
