1.uboot层

1)sprd/u-boot64/drivers/video/sprdfb/lcd

此路径下添加LCM驱动文件，如lcd_st7701_mipi.c

修改Makefile

obj-$(CONFIG_FB_LCD_ST7701S_MIPI) += lcd_st7701s_mipi.o

2)sprd\u-boot64\drivers\video\sprdfb

修改配置sprdfb_panel.c

extern struct panel_spec lcd_mipi_spec;

static struct panel_cfg panel_cfg[] = {

    {         .lcd_id = 0x7701,    //此id可自定义，匹配uboot层返回的id，相同就可识别LCM         .panel = &lcd_st7701_mipi_spec,     },

}；

vidinfo_t panel_info = { //此处需要适配LCM分辨率大小配置，如配置不正确会导致卡死在uboot层，黑屏，无法进入kernel

    .vl_col = 720,     .vl_row = 1440,             .vl_bpix = 4,     .cmap = colormap,

}；

2.kernel层

1)sprd\kernel\drivers\video\sprdfb\lcd

此路径下添加LCM驱动文件，如lcd_st7701_mipi.c

修改Makefile

obj-$(CONFIG_FB_LCD_ST7701_MIPI) += lcd_st7701_mipi.o

2)sprd\kernel\drivers\video\sprdfb

此路径下修改Kconfig

config FB_LCD_ST7701_MIPI     boolean "support ST7701 mipi panel"         depends on FB_SC8825     default n

3.打开uboot宏开关

sprd\u-boot64\include\configs

修改sp7731gea.h

#define CONFIG_FB_LCD_ST7701_MIPI

/*此宏需要根据实际分辨率配置，如配置有误会导致无法亮屏，看log却可以正常读ID和进入kernel*/

//#define CONFIG_FB_LOW_RES_SIMU  #ifdef CONFIG_FB_LOW_RES_SIMU #define LCD_DISPLAY_WIDTH 720 #define LCD_DISPLAY_HEIGHT 1440 #endif

4.打开kernel宏开关

sprd\kernel\arch\arm\configs

修改sp7731gea-dt_defconfig

CONFIG_FB_LCD_ST7701_MIPI=y