Hello,
I have been building up Yocto based systems during the last five years, most of them eith the imx family.
I have experience customizing uboot, kernel and devicetree for new hardware designs.
I would like to know if you have a new hardware so you need a full BSP development or whether you only need a custom rootfilesystem to run your app.
In case you have a brand new hardware, i would like to know it main features, and if your design is based on any evaluation board.
Do not hesitate to contact me for further details.
Regards