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PHYTC-3P-PHYCORE-AM335X: PHYTC-3P-PHYCORE-AM335X booting problem

Part Number: PHYTC-3P-PHYCORE-AM335X

Hi TI,

I have build my own carier board with the phycore AM335x SOM on it. Here what background information.

My board has the following interfaces:

- RS232 (UART0)

- SDIO (MMC0)

- RGMII interface

- USB

- JTAG (10 pins header to the SOM for 5 signals: TMS, TCK, SDO, SDI and RSTN)

I have some problems with booting the SOM from the SD card. I have flashed the right image on the SD card as phytec discribes:

Offcourse i have checked my circuits and they look good.

When i starting the SOM i get the following log file:

It seems that the logging and booting stops after 5 seconds..

I tried different images and different flashing tools but all have the same logging results.

Can you help me with finding the problem? 

Like to hear from you.

Kind regards,

Martijn van Dijk