Re: Pi 4 serial ports
John Rushford <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
This is all new to me and after some digging, I’m currently trying to put together a rk3328-uart2.dtso that I can compile to an overlay file so as to enable uart2 John > On Jan 9, 2023, at 1:43 PM, John Rushford <[email protected]> wrote: > > Greetings, > > I’m running FreeBSD 13.1-RELEASE on a raspberry pi 4b rev 1.4. The pi 4 has 4 UART ports available but as far as I can tell, FreeBSD 13.1 only supports 1 of them. > I would like to use one of the other UART ports to wire an adafruit GPS breakout too. I tried using the UART0 port but when I wire the GPS breakout to it, > I run into boot issues with u-boot and console logging. I know that in other OS’s such as raspian or ubuntu, you are able to enable the additional UARTS in config.txt. > Thinking that FreeBSD might support this I tried adding “dtoverlay=uartx” where x is 0 to 3 but I’m not seeing in any kernel logging that these ports were enabled and > I don’t see any additional ttyu’s in the dev tree. > > So my question, does FreeBSD support these additional UARTS and if so, how do I enable them so that I may use one for the GPS breakout? > > Thanks > John