Dear Rita,
Thanks for your reply.
We have downloaded u-boot code from freescale git.
git clone git://git.freescale.com/imx/uboot-imx.git -b imx_v2016.03_4.1.15_2.0.0_ga
We were not able to find any i.MX6DL based boards in boards/freescale directory, but we found a board "mx6qsabreauto" which we are building using configs/mx6solosabreauto_nand_defconfig.
Kindly confirm if this is correct or we need to use some other board and config.
Thanks,
Abhishek