Use the add_drv(1M) command to install the driver in the system. If the driver installs successfully,add_drv runs devfsadm(1M) to create the logical names in the /dev directory.
# add_drv xx
In this case, the device identifies itself as xx. The device special files have default ownership and permissions (0600 root sys). The add_drv command also allows additional names for the device (aliases) to be specified. See the add_drv(1M) man page for information on adding aliases and setting file permissions explicitly.
If the driver creates minor nodes that do not represent terminal devices such as disks, tapes, or ports, you can modify /etc/devlink.tab to cause devfsadm to create logical device names in /dev. Alternatively, logical names can be created by a program that is run at driver installation time.