MIPI DSI Use Kernel configuration Add the following configuration in arch/arm/configs/fireprime_defconfig： CONFIG_LCD_MIPI=y CONFIG_MIPI_DSI=y CONFIG_RK32_MIPI_DSI=y Driver configuration Add a new dts file Add a new dts file in the path "arch/arm/boot/dts/", such as lcd-xxx- mipi.dtsi Include the dts file and close the tve enable Include the dts file you add in first step in path "arch/arm/boot/dts/rk3128-fireprime.dts". If there have included other display's DTS files, please make them as annotation .If you want to use mipi lcd, you need to close tve enable： &tve { status = "disabled"; test_mode = <0>; }; Add backlight configuration Add backlight configuration in lcd-xxx-mipi.dtsi, for example: backlight { compatible = "pwm-backlight"; pwms = <&pwm0 0 25000>; rockchip,pwm_id= <1>; /* | dark(255-221) | light scale(220-0) | , scale_div=255*/ brightness-levels = ; default-brightness-level = <180>; enable-gpios = <&gpio1 GPIO_A7 GPIO_ACTIVE_HIGH>; }; Pwms: the attribute of PWM. The Firelfy-RK3288 use pwm1. 25000 is the frequency of PWM. brightness-level: array for back light, the max value is 255. The configuration of dark and light area. default-brightness-level: default brightness, the range of this value is 0~255. enable-gpios: the enable pin of back light. See the documentations in the follow path for more information: Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt Configure information of MIPI Add the configure information of MIPI in lcd-xxx-mipi.dtsi, for example: disp_mipi_init: mipi_dsi_init{ compatible = "rockchip,mipi_dsi_init"; rockchip,screen_init = <1>; rockchip,dsi_lane = <4>; rockchip,dsi_hs_clk = <500>; rockchip,mipi_dsi_num = <1>; }; rockchip,screen_init: the value of 0 means without special instruction while initial. The value of 1 means need the special instruction to initial the LCD display. rockchip,dsi_lane: the number of lane. rockchip,dsi_hs_clk: the value of hsclk. rockchip,mipi_dsi_num：the number of DSI interface, single channel is 1, dual channel is 2.（fireprime MIPI only supports single channel screen）. See the documentation of the follow path for more information:Documen tation/devicetree/bindings/video/rockchip_mipidsi_lcd.txt LCD pins configuration Add the LCD pins configuration in lcd-xxx-mipi.dtsi, for example: disp_mipi_power_ctr: mipi_power_ctr { compatible = "rockchip,mipi_power_ctr"; mipi_lcd_rst:mipi_lcd_rst{ compatible = "rockchip,lcd_rst"; rockchip,gpios = <&gpio2 GPIO_B0 GPIO_ACTIVE_LOW>; rockchip,delay = <10>; }; /* mipi_lcd_en:mipi_lcd_en { compatible = "rockchip,lcd_en"; rockchip,gpios = <&gpio0 GPIO_C1 GPIO_ACTIVE_HIGH>; rockchip,delay = <10>; };*/ }; There are power enable pin "mipi_lcd_en", chip select pin "mipi_lcd_cs", reset pin "mipi_lcd_rst". You can modify those configuration according to the LCD. The configuration of initial instructions Add the configuration of initial instructions in lcd-xxx-mipi.dtsi, for example: disp_mipi_init_cmds: screen-on-cmds { rockchip,cmd_debug = <0>; compatible = "rockchip,screen-on-cmds"; rockchip,on-cmds1 { compatible = "rockchip,on-cmds"; rockchip,cmd_type = ; rockchip,dsi_id = <0>; rockchip,cmd = <0x05 0x29>; rockchip,cmd_delay = <0>; }; rockchip,on-cmds2 { compatible = "rockchip,on-cmds"; rockchip,cmd_type = ; rockchip,dsi_id = <0>; rockchip,cmd = <0x05 0x11>; rockchip,cmd_delay = <200>; }; }; It will need the special instructions to initial the When the value of "rockchip,screen_init" is set to 1. rockchip,cmd_debug: Set this value to 1 and you will get the debug information from the debug serial. rockchip,on-cmdsXX: the information of each instruction. rockchip,cmd_type：the mode for data transfer. PDT mode or HSDT mode. rockchip,dsi_id：The DSI interface for instructions transfer. If this value is set to 0 means using the DSI0(it’s the left side of the display while dual lane MIPI display ) for instruction transfer.If this value is set to1 means using the DSI1(it’s the right side of the display while dual lane MIPI display ) for instruction transfer. This value is set to 2 means using both the DSI0 and DSI1 for instruction transfer. rockchip,cmd：the sequence of the instructions. The first Byte is the DSI data type, the second Byte is the RGE. The rest are the instructions. rockchip,cmd_delay：the delay after sending instructions. The unit is ms. The configuration of display sequence Add the configuration of display sequence in lcd-xxx-mipi.dtsi, for example: disp_timings: display-timings { native-mode = <&timing0>; compatible = "rockchip,display-timings"; timing0: timing0 { screen-type = ; lvds-format = ; out-face = ; color-mode = ; clock-frequency = <67000000>; hactive = <768>; vactive = <1024>; hsync-len = <64>; hback-porch = <56>; hfront-porch = <60>; vsync-len = <14>; vback-porch = <30>; vfront-porch = <36>; hsync-active = <0>; vsync-active = <0>; de-active = <0>; pixelclk-active = <1>; swap-rb = <0>; swap-rg = <0>; swap-gb = <0>; }; }; Configure the time sequence in disp_timings node. screen-type: Display type. fireprime MIPI only supports single channel screen,so the display type is SCREEN_MIPI. lvds-format: Independent options. out-face: color configuration, it can be OUT-P888(24 bits), OUT_P666(18 bits)or OUT_P565(16 bits) clock-frequency: clock of the LCD, measure by Hz. As to other timing’s attribute, you can take a look at this picture. Dsihost configuration Using single MIPI, enable the dsihost0, for example: &dsihost0 { status = "okay"; };