The following table lists the U-Boot file associated with each ConnectCore MP15 variant:

RAM size TF-A file fip file U-Boot defconfig

512MiB

tf-a-ccmp15-dvk-nand.stm32

fip-ccmp15-dvk-optee.bin

ccmp15-dvk_defconfig

Check your variant RAM size on the serial console boot log:

NOTICE:  CPU: STM32MP157CAC Rev.Z
NOTICE:  Model: Digi International ConnectCore MP15 Development Kit
NOTICE:  BL2: v2.6-stm32mp1-r2.1(release):dub-2021.10-r4.2(8fdd4435)
NOTICE:  BL2: Built : 14:41:33, Sep 14 2023
NOTICE:  BL2: Booting BL32
optee optee: OP-TEE: revision 3.16 (43350dda)


U-Boot dub-2021.10-r4.2 (Sep 14 2023 - 14:40:08 +0000)

CPU: STM32MP157CAC Rev.Z
DRAM:  512 MiB
optee optee: OP-TEE: revision 3.16 (43350dda)
Clocks:
- MPU : 650 MHz
- MCU : 208.878 MHz
- AXI : 266.500 MHz
- PER : 24 MHz
- DDR : 533 MHz
WDT:   Started with servicing (32s timeout)
NAND:  512 MiB
MMC:   STM32 SD/MMC: 1
In:    serial
Out:   serial
Err:   serial
Model: Digi International ConnectCore MP15 Development Kit
ConnectCore MP15 SOM variant 0x01: 512 MiB DDR3, Wi-Fi, Bluetooth
  Board version 1
Boot:  NAND
Net:   eth0: ethernet@5800a000
Normal Boot
Hit any key to stop autoboot:  0
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