kernel-crash: mounted root (jffs2 filesystem) on device 31:9

[y bhanu]

Hi have a weird situation.
I have a working 2.6.32 kernel and the nand rootfs which I am able to
boot fine and operate.

I upgrade my kernel to 2.6.35-7 and by keeping rootfs and dtb files are same.
I got everything working except the NAND rootfs working.
I can boot and mount a ramdisk but I need a NAND rootfs working too.

I am using the same dtb file as before.
./arch/powerpc/boot/dts/p1011rdb.dts (which has the NAND layout info)

The only thing that changed is the Linux kernel.
So, are there an other place in the kernel where the nand layout gets
redefined or so forth. somewhere in mtd maps.

Should I change the MTD maps(don't know which one??) too??
How can I debug this?