AOSP flash goes on loop when booting

Hi, I am trying to boot an AOSP image on the dragonboard 845c.
I have followed the guide from the wiki (AOSP/db845c - Linaro Wiki).

First, I downloaded the bootloader from Linaro Snapshots
I downloaded the 91, which is the latest available at the time of writing this post.

Once I flashed the bootloader with the available flashall script I have downloaded and booted the precompiled images from Linaro Snapshots
I downloaded the 924 which is the latest available at the time of writing this post.

Once the images were booted I proceeded to do a fastboot reboot. When the board boots the Linux kernel does not start and the board goes to loop writing always the same logs.

I attach the complete file log and the portion of the log that gets repeated indefinitely when I try to boot the board.

In the zip there are 2 files:

  • LogFlashPrebuilts is the complete log
  • loopLog.txt contains the extracted portion of the log that gets repeated

Other things I have tried:
Compiling and flashing the AOSP 12.0.0-r15 branch and the master branch. I get the same loop.
Compiling the kernel and rebuilding the AOSP. Same thing.

I wonder what I am doing wrong or what I can do to boot Android on the board.

Thank you in advance for your support.