Hello,
I have developed a custom board using the STM32MP157DAA1. When I try to write the boot image, the process stops after writing fsbl-boot and does not proceed to the next step.
I checked the output from the debug port and received the following log:
NOTICE: CPU: STM32MP157DAA Rev.Z
NOTICE: Model: STMicroelectronics custom STM32CubeMX board - openstlinux-6.6-yocto-scarthgap-mpu-v25.06.11
INFO: PMIC version = 0x21
INFO: Reset reason (0x15):
INFO: Power-on Reset (rst_por)
INFO: FCONF: Reading TB_FW firmware configuration f file from: 0x2ffe2000
INFO: FCONF: Reading firmware configuration informa tion for: stm32mp_fuse
INFO: FCONF: Reading firmware configuration informa tion for: stm32mp_io
INFO: Using USB
INFO: Instance 2
INFO: Boot used partition fsbl1
NOTICE: BL2: v2.10-stm32mp1-r2.0(debug):()
NOTICE: BL2: Built : 11:48:32, Oct 29 2025
INFO: BL2: Doing platform setup
INFO: RAM: DDR3-DDR3L 16bits 533000kHz
ERROR: DDR addr bus test: can't access memorPANIC at PC : 0x2ffed13d
Exception mode=0x00000016 at: 0x2ffed13d
As shown in the log, a PANIC occurs immediately after the ERROR: DDR addr bus test: can't access memor.
I am currently reviewing the TF-A device tree configuration, but I haven't been able to identify the cause. Does this error indicate that the DDR memory is not working correctly?
I am using the same DDR memory part number as the evaluation board: MT41K256M16TW-107_IT_P_TR.
Could you please provide any advice on what I should check or what the potential cause might be?
Thank you.
