<00 04 00 00> - this is DisplayPort
<00 08 00 00> - this is HDMI
<04 00 00 00> - this is Digital DVI
<02 00 00 00> - this is LVDS (for laptops)
<01 00 00 00> - this is just a Dummy port
举例
framebuffer-conX-enable = 01000000
framebuffer-conX-type = 00080000 //使用HDMI显示器连接