Serial console via USB (USBTTY) ...
herbert at 13thfloor.at
Thu Apr 1 13:19:49 CEST 2021
I'm trying to get a serial console via USB working on
STM32MP1 but I'm encountering some problems there ...
The u-boot README suggests to add the following config
entries to the board specific .h file:
CONFIG_USBD_HS (for high speed support)
... but when doing so, I get a number of linker errors
which suggest that there is something missing:
Marek (via IRC) suggested that this is because the
USB_TTY seems to be based on the old gadget framework
and needs to be updated to the new one.
It was also suggested that a port of the Linux serial
function driver would be a good alternative to get
CDC/ACM functionality into u-boot and that Andy might
already be working on this ...
So my questions are:
- What is currently the best/easiest approach to
get a serial console via USB working?
- Is the port from Linux in a stage that it can
be tested and/or finalized within a easonable
amount of time?
- Can I help getting this working?
Thanks in advance,
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