No display output on the Aquila AM69

The display work good.

DT to DT : success
DT to HDMI : x
HDMI to HDMI : x

My test results that only DT to DT cable works.

I failed to build BSP 7.

I don’t know how to boot with pre-build BSP. Please give me a link.
Also tell me how to create sdcard and boot from it.
I also want to know about device tree.

thanks