Trying to boot FreeBSD 14.2 on the KHADAS-EDGE-V with some 4 inches HDMI displays....

[Mario Marietto]

Hello.

I've installed FreeBSD 14.2-RELEASE on both my boards (RockPro64 and Khadas
Edge V),both based on the Rockchip RK3399 and I've used a display that has
a resolution of 720 x 720 resolution and I saw that the screen remains
almost black (almost black (almost because I see a dim illumination coming
from the display) .

I don't even see the u-boot logo. Instead,it is able to turn on my large
HDMI monitor,which has a resolution of 1920x1080 pixels.

Since I'm building a FreeBSD modular phone, I want to use a small HDMI
display with a low resolution.

Later I remembered that I had two displays,stored inside the shelf,that
could be tested,to see if they work with u-boot and the khadas-edge-v. The
first one is a 4 inch display,720x720 from waveshare,the second one is a
480x480 from a Chinese brand. The result that I've got is the same for both
:

https://drive.google.com/file/d/1InM4f4DLcYX8Y3ntERItnhwVuEnmHWeK/view?usp=sharing

What happens is that u-boot is able to show the first stage of messages on
the screen and then it becomes black and it remains black....

What's broken ? How to fix it ? Thanks.

-- 
Mario.