Someone please advise me.
In our custom board, it can't boot from SD but it can boot from serial boot.
The decision that whether boot is success or not is log outputs from a uart.
If it doesn't output a log, we judged it was failed.
In my understanding, there are no difference between SD boot and serial boot except the location of u-boot after using Boot ROM code.
Is there any difference between SD boot and serial boot ?
If yes, please let me know.
In addition, the board isn't satisfied with a recommendation of placing decoupling capacitors.
Is there any possibility of causing this issue ?