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AM6548: Customized EVM board cannot bring up

Part Number: AM6548

Hi Ti,

We have our own EVM board and tried to bring up.

However, we just got below log and no more logs.

U-Boot SPL 2020.01 (Jun 18 2021 - 14:12:19 +0800)
SYSFW ABI: 3.1 (firmware rev 0x0015 '21.5.0--v2021.05 (Terrific Llam')
Reading on-board EEPROM at 0x50 failed 1
Trying to boot from MMC2
Starting ATF on ARM64 core...

It seems bootloader not load successfully.

Is there any possible reason? 

Please give us some possible hint to further debug.

Thanks.

Eric