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iMX6Q boot from eMMC in boot from fuses mode

Question asked by Evgeny Molchanov on Sep 13, 2016
Latest reply on Sep 16, 2016 by Evgeny Molchanov

Hello all.

Help me please solve problem with boot from eMMC (port USDHC4 8bit 4.4) in boot from fuses mode.

In internal boot mode i set with GPIOs:

BOOT_CFG1 = 0x60,

BOOT_CFG2 = 0xd8

and board booting normally from eMMC.

Then program fuses from u-boot with commands:

fuse prog 0 5 0x5800d860, BOOT_CFG4 = 0x58 for recovery from SPI.

fuse prog 0 6 0x00000010, BT_FUSE_SEL to 1

and switch to boot from fuses mode. After this boards booting from eMMC fail, but after 10-12 seconds u-boot booting from SPI (recovery works).

In both modes I program eMMC with MFG tools.

That am I doing wrong?

Thank you.