Hi @henrique.tx , thanks for your response.
Now I understood something more about the problem, and I want to clean the discussion.
At the moment I’m using kernel 4.9. In the menuconfig of this kernel the driver for st7789v is under “staging” and not under “Device drivers > Graphic support > DRM > Panels” like in kernel 5. This is why I’m trying to use “display” mode in the device tree, instead the “panel”.
This is also because @shsasse (and another person, in another ticket How to show splash screen instead show booting output) said that they are able to use the display in this way.
Furthermore the kernel 4.9 is the only kernel where I’m able to bring up the display AS MODULE.
So, for the moment, I prefer to bring up the display on this version of kernel (4.9), the version that I have, at the moment, in use on my board, before to jump to BSP 5.
Is this possible?
Which version of kernel are you using @shsasse ?
Thanks a lot!
Valerio