AM5728: custom board based on EVM572X do not boot

I have a custom board based on beagleboard-X15 (similar to TMDSEVM572X evaluation board) with the following modifications:

- remove unused interfaces : USB, SATA, HDMI, AUDIO

- replace obsolete SDCARD connector by a new one

I have a linux SD card created with TI processor SDK. This SD card boot correctly on the EVM572x (in fact this is a beagleboard-X15 but its quite the same board)

The same SD card doesn't boot on my custom board. I have nothing on UART console, and the power supply shutdown after few seconds if I do not put a jumper on J5 (powerhold pin of PMIC)

I have tried the followings things:

- launch a hello_world program through JTAG with USB560v2 => it works

- program the EEPROM with the same content as the beagleboard => linux SD card still doesn't boot

- Read Tracing Vector through JTAG:

• • • Vector1 : 0x0010009F (working beagleboard : 0x0010009F)
    • Vector2 : 0x40001000 (working beagleboard : 0x40001000)
    • Vector3 : 0x00000020 (working beagleboard : 0x000000E0 )

- flash the SD card content on beagleboard eMMC, unmount the eMMC component and mount it on my custom board => it still not boot

- launch PDK diagnostic programs on my custom board => all test passed (DDR, eMMC, µSD, EEPROM, PMIC, UART, Temp Sensor)

All peripherals seems to work, I don't understand why my board is not booting ...