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IMX6 Solo fails to go into serial boot mode

Question asked by Yongwoo Lee on Jun 24, 2016
Latest reply on Jun 24, 2016 by igorpadykov

I am developing the IMX6 solo board which is booting from eMMC.


The board is booting from the eMMC properly at the normal operation as a default. However, it doesn't go into the serial boot mode (USB otg) when the external boot mode selection is set to 01 in order to update the program on the eMMC.


Do you have any idea about why it always boots from the eMMC although the boot mode is set to 01 externally?


The external boot mode pins [0:1] is tied to the 3V_VSNVS and confirm all power rails are satisfied with the requirement.


After all power-up, the POR_B gets high properly.


Best regards,