[Yaffs] [YAFFS2] : some basic queries on YAFFS2

Hi All,

I have some queries on YAFFS2 usage.

(1) *YAFFS2 Direct Interface* : What is the use of this interface? Is it
mandatory when I use YAFFS2?

(2) *Garbage Collection and Wear-Levelling*: How do I test these things are
working?

(3) *4K Page Size* : This chip supports 4K page size. Is there any changes
required in YAFFS2 source code for 4K support.

(4) *Multiplane Programming* : The newer chip we are planning to use is
multiplane NAND chip. How does YAFFS2 support Multiplane chip?

Best Regards,
Saquib