Same here:
U-Boot TPL 2022.07-armbian (Nov 26 2023 - 16:22:55)
Channel 0: col error
Cap error!
Channel 1: col error
Cap error!
256B stride
lpddr4_set_rate: change freq to 400000000 mhz 0, 1
lpddr4_set_rate: change freq to 800000000 mhz 1, 0
Trying to boot from BOOTROM
Returning to boot ROM...
I'm not able to get past that whatever I do. It boots Radxa own debian image, but it's old and bulky with gui which I don't need. Happens on both CLI and Desktop image:
Armbian_23.11.1_Rockpi-4c_bookworm_current_6.1.63.img.xz
Armbian_23.11.1_Rockpi-4c_jammy_current_6.1.63_xfce_desktop.img.xz