On Thu, Jan 9, 2020 at 9:28 AM Richard Leitner <richard.leitner@skidata.com> wrote:
We're using the latest stable mainline kernel for different i.MX6 derivates.

For us everything (USB, ETH, SATA, MMC, I2C, CODA, HDMI, etc...) works with the mainline kernel.
Except the JPEG encoder which is currently under Patch review and will
hopefully be merged soon.

If you have any specific questions just ask ;-)

Thanks for the info.  Do you know if mainline 4.14.x contains adequate support for the i.MX6UL?  4.14 appears to have the longest planned support according to https://www.kernel.org/category/releases.html

Thanks, 
Jesse