failed to boot from emmc on i.mx6ull

[allonli]

CPU: IMX6Y2CVM

SD1 - SD card

SD2 - 8bit eMMC

BSP version: 4.14.98-2.0.0

compile u-boot.imx with "mx6ull_14x14_evk_emmc_defconfig"

because boot config pins were not available, boot from fuse.

fuse value 0x450=0x40, bootmode = 00

boot from sdcard on SD1, everything is ok.

change fuse value: 0x450=0x860 (bus width=1bit, port select=usdhc2, boot device= emmc)

use the same u-boot.imx, but nothing appeared. 

which setting may be the reason for this fault?

I use uuu tools, how to know which port would the image would be burned into? is there a parameters to set this value?

[igorpadykov]

Hi Allon

one can attach jtag debugger an check if correct boot configuration

was set in registers SRC_SBMR1,2

Also may be useful:

eMMC 8GB to 4GB - crash on linux (yocto) boot 

for uuu port one can look at

How to redirect UUU to Various SDx Ports i.MX8M(x) 

Best regards
igor
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