AnsweredAssumed Answered

Why boot up time is different by boot I/F

Question asked by ko-hey on Jan 15, 2018
Latest reply on Jan 26, 2018 by Fabio Estevam

Hi all


I'm using i.MX6 and i.MX USB Loader.
We hope to shorten the writing time of FW during board production.


The operation method is going to proceed below.

1. When manufacturing the board, mounting a blank FROM (eMMC)
2. Boot the board in Serial Downloader mode and transfer boot file from UART 1
3. Write FW to eMMC


Compared the processing speed of 3 and Internal Boot (eMMC), it takes quite a while in Serial Donwloader mode.

Boot files use the same thing and the performance seems to be different depending on Boot I / F.


Why does the boot time is different ?

If the serial downloader mode can boot up as same speed as Internal Boot, we can reduce the production time.

Please advise me.




・i.MX USB Loader