Compile Question:Difference between DM816X_UD_DVR and DM816X_TI_EVM

hi all

basic info:

* DVRRDK_04.00.00.03

* custom dm8168 board

I found that:

when DVR_RDK_BOARD_TYPE:= DM816X_UD_DVR，uboot support the nandflash that is 8-bit buswidth

when DVR_RDK_BOARD_TYPE:= DM816X_TI_EVM，uboot support the nandflash that is 16-bit buswidth

Then I checked the schematic diagram in DVRRDK_04.00.00.03\dvr_rdk\docs\Hardware\ folder，indeed，a 8-bit nandflash is connected to dm8168(K9F2G08U0M)

my question is:

1，Are there other difference in terms of hardware when DVR_RDK_BOARD_TYPE = DM816X_TI_EVM?

2，Are there other difference in terms of software(like linux kernel,mcfw?) when DVR_RDK_BOARD_TYPE = DM816X_TI_EVM?

3， Is there a Hardware schematics according to DM816X_TI_EVM?where i can find it?

sorry about my english.