1，在頂層.config裡查找“LCD”,出現以下（所有在menuconfig被Enable的都在.config裡面）CONFIG_FB_S5P_LCD_INIT=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
2，在menuconfig裡搜“FB_S5P_LCD_INIT”
Symbol: FB_S5P_LCD_INIT [=y]
│ Type : boolean
│ Prompt: LCD init in kernel
│ Defined at drivers/video/samsung/Kconfig:20│ Depends on: HAS_IOMEM [=y] && FB_S5P [=y]
│ Location:
│ -> Device Drivers
│ -> Graphics support
│ -> Support for frame buffer devices (FB [=y])
│ -> S5P Framebuffer support (FB_S5P [=y])