Our custom imx6ul board can't boot from the NAND Flash after we burn in the nand flash via the micro-SD.
We just chose the Micron MT29F32G08CBADBWP MLC NAND FLASH. We had found the nand flash hardware infomation when we burn in the nand flash via micro-SD:
nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x44
nand: Micron MT29F32G08CBADBWP
nand: 4096MiB, MLC, page size: 8192, OOB size: 744
gpmi-nand 1806000.gpmi-nand: Default ecc strength(52) is beyond our capability(40). Try to use maximum ecc strength controller
After burn in, we had set boot mode as below: