[yocto] devtmpfs failing to mount

[Loïc Domaigné]

Bonsoir Emily,

> I'm using Yocto version rocko with a custom layer to run on the Zynq+ SoC
> on a custom board. When trying to boot I'm getting the following error in
> the boot output:
> ... 
> [    4.127997] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature
> incompatibilities
> [    4.183737] EXT4-fs (mmcblk0p2): recovery complete
> [    4.190840] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data
> mode. Opts: (null)
> [    4.198870] VFS: Mounted root (ext4 filesystem) on device 179:2.
> [    4.205861] devtmpfs: error mounting -2
> 
> Are there common reasons for this happening I should check?

Not sure if that helps, but I'd check:
a) What's the type of the mmcblk0p2 (=rootfs?) partition?  and
b) How is this partition mounted?

Cheers!
Loïc