Apalis TK1: EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities

Hello,
I had to patch the kernel-source due to display voltages and frequencies (arch/arm/boot/dts: dts, dtsi,.). Unfortunately now I get a boot error which I cannot assign to my changes. Is there a menuconfig option that I should check for this:

EXT4-fs (mmcblk0p2): couldn’t mount as ext3 due to feature incompatibilities
[ 9.517378] List of all partitions:
[ 9.522613] b300 15388672 mmcblk0 driver: mmcblk
[ 9.529728] b301 16384 mmcblk0p1 4ab5fb4a-01
[ 9.537016] b302 15339520 mmcblk0p2 4ab5fb4a-02
[ 9.544213] b330 4096 mmcblk0rpmb (driver?)
[ 9.551255] b320 4096 mmcblk0boot1 (driver?)
[ 9.558440] b310 4096 mmcblk0boot0 (driver?)
[ 9.565640] No filesystem could mount root, tried: ext3
[ 9.572810] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)

Regards
Dirk

Please have a look at this community post.

link text

sdargs=ip=off root=/dev/mmcblk1p2 rw rootfstype=ext4 rootwait
emmcargs=ip=off root=/dev/mmcblk0p2 rw rootfstype=ext4 rootwait

works fine!
Thx