I would like to know about iMX8M Plus features supported more in detail such as reference manual.
The corresponding documentation link:
Home -> Processors and Microcontrollers -> Arm Processors -> i.MX Applications Processors -> i.MX 8 Processors -> i.MX8M Plus
Does not include a reference manual.
Will be available some day?
Yes, as you may know the i.MX 8MPlus is still in pre-production stage, once it is released the documentation should be available on our webpage.