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Title: LVDS Display Interfacing with AIO RK3399J [Print This Page]

Author: maneesh.singh Time: 8/21/2022 03:48
Title: LVDS Display Interfacing with AIO RK3399J
Hi Sir,

I am trying to interface the 10.1 Inch 1280x800 LVDS display with AIO Rk3399J Board.

I did all the changes in DTS file: kernel/arch/arm64/boot/dts/rockchip/rk3399-firefly-aio-lvds.dts file
and  TC358764_5_774_5XBG_DSI-LVDS_Tv11p_nm_1280x800.xls sheet As per https://wiki.t-firefly.com/en/AIO-3399J/driver_lcd.html URL.

But after powering on the board and LCD module I am not able to see anything on the LCD. it shows a blank screen.

Please find attached -
1. My DTS File
2. screenshot of  LVDS display datasheet timing parameters, TC358764_5_774_5XBG_DSI-LVDS_Tv11p_nm_1280x800.xls sheet and my display connection.
3. Timing parameters generated by TC358764_5_774_5XBG_DSI-LVDS_Tv11p_nm_1280x800.xls sheet.

Please suggest what I am doing wrong OR what configuration I am missing.

panel-init-sequence = [
29 02 06 3C 01 05 00 03 00
29 02 06 14 01 03 00 00 00
29 02 06 64 01 05 00 00 00
29 02 06 68 01 05 00 00 00
29 02 06 6C 01 05 00 00 00
29 02 06 70 01 05 00 00 00
29 02 06 34 01 1F 00 00 00
29 02 06 10 02 1F 00 00 00
29 02 06 04 01 01 00 00 00
29 02 06 04 02 01 00 00 00
29 02 06 50 04 20 01 F4 03
29 02 06 54 04 46 00 46 00
29 02 06 58 04 00 05 14 00
29 02 06 5C 04 05 00 0F 00
29 02 06 60 04 20 03 03 00
29 02 06 64 04 01 00 00 00
29 02 06 A0 04 06 80 44 00
29 02 06 A0 04 06 80 04 00
29 02 06 04 05 04 00 00 00
29 02 06 9C 04 31 00 00 00
      ];

panel-exit-sequence = [
05 05 01 28
05 78 01 10
];

disp_timings: display-timings {
            native-mode = <&timing0>;
            timing0: timing0 {
                           clock-frequency = <148000000>; //166000000 @50
                        hactive = <1280>;
                        vactive = <800>;
                        hsync-len = <70>; //20, 50
                        hback-porch = <70>; //50, 56
                        hfront-porch = <20>;//50, 30 //1580
                        vsync-len = <5>;
                        vback-porch = <15>;
                        vfront-porch = <3>;
                        hsync-active = <0>;
                        vsync-active = <0>;
                        de-active = <0>;
                        pixelclk-active = <0>;

Thanks

LVDS_Display.png (1.02 MB, Down times: 238)

screenshot

rk3399-firefly-aio-lvds-HSX101H40C.pdf

59.19 KB, Down times: 10

DTS file

Author: maneesh.singh Time: 8/22/2022 11:19
Hi,

Any suggestion or reply on this ?

Thanks

Author: maneesh.singh Time: 8/23/2022 22:16

Hi,

Anyone from firefly, please provide any suggestions or feedback.

Thanks

Author: Firefly Time: 8/25/2022 09:58

maneesh.singh Posted at 8/23/2022 22:16
Hi,

Anyone from firefly, please provide any suggestions or feedback.

Sorry for the late reply. Our engineers are following this.

Author: maneesh.singh Time: 8/25/2022 22:26
Hi Sir
Thanks for your reply.
Waiting for your response.

Thanks,

Author: 799959745 Time: 8/26/2022 10:05
Is the LVDS screen purchased from firefly's official website? Please provide the purchase link below.

Author: maneesh.singh Time: 8/26/2022 15:33

799959745 Posted at 8/26/2022 10:05
Is the LVDS screen purchased from firefly's official website? Please provide the purchase link below ...

Hi,

Thanks for your reply.

I am using a 10.1-inch 1280x800 LVDS Display from Viete.

I am using the AIO-3399J board for my development.

on wiki page -> https://wiki.t-firefly.com/en/AIO-3399J/driver_lcd.html

it is mentioned that we need to use TC358764_5_774_5XBG_DSI-LVDS_Tv11p_nm_1280x800.xls to generate the initialization command.

But when I checked AIO-3399J schematics it is using a TC358772 bridge chip.

So shall we use TC358764_5_774_5XBG_DSI-LVDS_Tv11p_nm_1280x800.xls ?

or is there any other tool for TC358772?

Thanks

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