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/dev目录下的设备节点问题

Other Parts Discussed in Thread: AM3505

 cpu型号是am3505,

在内核中注册了矩阵键盘设备和设备驱动:marix-keypad,


目标板启动后,进入/sys/devices目录,出现matrix-keypad

但是/dev目录下没有出现设备键盘设备节点,因为matrix-keypad的设备号

是动态分配的,请问该怎样使用在/dev下创建设备节点,QT应用程序需要通过此

节点访问键盘设备