文件系统无法读取

采用"OKMX6UL-C（eMMC&Nand版）用户资料-20181030"的源码，编译dtb后下载出现

[    2.260296] VFS: Cannot open root device "mtdblock5" or unknown-block(0,0): error -6
[    2.268278] Please append a correct "root=" boot option; here are the available partitions:
[    2.276772] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[   81.941092] random: nonblocking pool is initialized

默认的dtb能正确识别分区，不知道需要编译时注意什么

没找到原因，不过环境重新安装编译后就可以了