It is a hard job for you to port android5.1 to i.MX6 platform by yourself, we have released android5.0 BSP , you can get it from our website.
In addition, we are also designning android 5.1 bsp, so I suggest you'd better wait for it !
Thanks for your response...just to be sure, we're using Freescale kernel_imx l5.1.1_2.0.0_6qp-beta branch, and we just would like to get this one without the device tree.
Do we have such one for 5.0 (with the old legacy kernel configuration)? if yes, which branch?