Adding Yaffs/Yaffs2 support to kernel


Is there a guide adding porting yaffs/yaffs2 support to the kernel?
I'm using 2.6.28-omap1? I noticed the Android BeagleBoard port uses
yaffs; I'm using OE/Angstrom so I rather not switch over to Android. has the guide but it seems very outdated so I'm not sure
if would work with 2.6.28-omap1. Where I can find more info? TIA.