I have a self-made imx8mp board, use DDR4 memory, use yocto to compile the image and burn the SD card, the serial port output:
U-Boot SPL 2022.04-uboot_v2022.04-2.5.0+g5fb673f885 (Jun 25 2023 - 07:03:55 +0000)
DDRINFO: start DRAM init
DDRINFO: DRAM rate 3200MTS
DDRINFO:ddrphy calibration done
DDRINFO: ddrmix config done
SEC0: RNG instantiated
Trying to boot from BOOTROM
Boot Stage: Primary boot
image offset 0x8000, pagesize 0x200, ivt offset 0x0
NOTICE: BL31: v2.6(release):lf-5.15.71-2.2.0-0-g3c1583ba0
NOTICE: BL31: Built : 11:00:38, Nov 21 2022
and stuck here
