Typically, there is one manpage for each written driver component. The manpage file for a devx driver component is called 'devx.9drv' and accessible through the devx name. This manpage contains the following information:
the hardware that can be serviced by the driver
the driver name
the driver framework features and mechanisms that are implemented in the driver (probing, dynamic loading, and so on)
the description of device tree node properties used by the driver