The board contain a Nand Flash , the Nand flash works fine in the petalinux 2014.4, and mtd . However, When I upgrate my enirement to Petalinux 2018.3, the Kernel can not find the Nand the flash. the log is
" nand: No NAND device found pl35x-nand e1000000.flash: nand_scan_ident for NAND failed "
But in the Uboot, the nand info can get the Nand Flash information.