For the SPI NOR booting on fuse steps.
1. Please boot your PCB on uboot and type below command for fuse boot setting.
MX6Q SABRESD-MFG U-Boot > imxotp blow --force 5 0x0a000030
MX6Q SABRESD-MFG U-Boot > imxotp read 5
Reading fuse at index: 0x5
Fuse at (index: 0x5) value: 0xA000030
MX6Q SABRESD-MFG U-Boot > imxotp read 6
Reading fuse at index: 0x6
Fuse at (index: 0x6) value: 0x0
MX6Q SABRESD-MFG U-Boot > imxotp blow --force 6 0x10
Current fuse at (index: 0x6) value: 0x0
Blowing fuse at index: 0x6, value: 0x10
Reloading shadow registers...
Operation succeeded fuse at (index: 0x6) value: 0x10
MX6Q SABRESD-MFG U-Boot > imxotp read 6
Reading fuse at index: 0x6
Fuse at (index: 0x6) value: 0x10
MX6Q SABRESD-MFG U-Boot >
2. Set the boot mode for 00 as Boot from fuses
3. You could see the SPI clock on scope after re power on.