Out of order STM32MP157CAC. PANIC at PC : 0x2fff2d17 Exception mode=0x00000016 at: 0x2fff2d17

[DFomi.1]

Hello.

I developed my own board based on A-DK1 board using STM32MP157CAC and MicroSD, PMIC, Ethernet and DDR periphery. When I connect my plate to the usb with sd-card (st-link 2.1) I always receive the message:

PANIC at PC : 0x2fff2d17

Exception mode=0x00000016 at: 0x2fff2d17

Only these 2 strings.

My power and clock schematics exactly the same as -dk1 board.

I have only one difference. There is a STM32MP157AAC on the dk-1 and I use STM32MP157CAC...I have one sd-card for the both boards. My MPU just doesn't wake up and I don't understand what should I doing

[PatrickF · Accepted solution]

Hi,

may I suggest you to check for classic pitfall/debug steps:

https://community.st.com/s/article/FAQ-STM32MP1-bring-up-troubleshooting-guide

https://community.st.com/s/article/FAQ-STM32MP1-Bring-up-procedure

Going from STM32MP157A to STM32MP157C should not be the root cause of your issue.

By experience, one of the first frequent pitfall is using an HSE Crystal with a Device Tree set for HSE bypass (BootROM has autodetect, but TF-A used Device Tree settings)

Then once first verification steps are not solving your issue, please share the Device Tree you used to compile your SD-Card binaries and the complete TF-A log.

Note that I wonder if the Starter Package SD-Card of STM32MP157A-DK1 will work on a custom board (as in Starter Package there is probably some automated board detection based on custom OTPs sets only on ST development boards).

Btw, I will put your precedent ticket as 'answered'

Regards,

Patrick

[DFomi.1]

Thank you very much! I had a mistake in my I2C4 schematic.