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i.MX6 solo: problem forcing it into USB serial downloader mode

Question asked by ThomasG1z on Apr 1, 2014
Latest reply on Apr 2, 2014 by ThomasG1z

Trying to force the cpu into serial downloader mode by setting the BOOT_MODE[1:0] pins to "01". However, I also have an eMMC device, with u-boot, on port 2 and it seems that the ROM chooses to boot from that device instead..?! How come? Or have I overlooked something obvious?

 

However, if I do a "reset" command within u-boot it does enter USB mode. It does not if I just toggle the external reset line though.

 

The reason I want to force it into serial download mode is for factory programming that procedures are the same regardless if for some reason the board might be programmed before, for various reasons.

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