AIO-3399J LVDS

peksuj · Posted at 6/11/2018 18:20:54

Hi,

I use this settings:

&dsi {
status = "okay";
dsi_panel: panel {
compatible ="simple-panel-dsi";
reg = <0>;
//ddc-i2c-bu
//power-supply = <&vcc_lcd>;
backlight = <&backlight>;
enable-gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio2 27 GPIO_ACTIVE_HIGH>;
dsi,flags = <(MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET)>;
dsi,format = <MIPI_DSI_FMT_RGB888>;
bus-format = <MEDIA_BUS_FMT_RGB888_1X24>; //MEDIA_BUS_FMT_RGB666_1X18
dsi,lvds-force-clk = <800>; // 800/2/3 ~= 65Mhz
dsi,lanes = <4>;

      dsi,channel = <0>;

      enable-delay-ms = <35>;
      prepare-delay-ms = <6>;

      unprepare-delay-ms = <0>;
      disable-delay-ms = <20>;

      size,width = <120>;
      size,height = <170>;

      status = "okay";

panel-init-sequence = [
29 00 06 3C 01 05 00 03 00
29 00 06 14 01 03 00 00 00
29 00 06 64 01 03 00 00 00
29 00 06 68 01 03 00 00 00
29 00 06 6C 01 03 00 00 00
29 00 06 70 01 03 00 00 00
29 00 06 34 01 1F 00 00 00
29 00 06 10 02 1F 00 00 00
29 00 06 04 01 01 00 00 00
29 00 06 04 02 01 00 00 00
29 00 06 50 04 20 01 F0 03
29 00 06 54 04 08 00 08 00
29 00 06 58 04 20 03 20 00
29 00 06 5C 04 04 00 0B 00
29 00 06 60 04 00 05 11 00
29 00 06 64 04 01 00 00 00
29 00 06 A0 04 06 80 44 00

29 00 06 A0 04 06 80 04 00
29 00 06 04 05 04 00 00 00
29 00 06 80 04 00 01 02 03
29 00 06 84 04 04 07 05 08
29 00 06 88 04 09 0A 0E 0F
29 00 06 8C 04 0B 0C 0D 10
29 00 06 90 04 16 17 11 12
29 00 06 94 04 13 14 15 1B
29 00 06 98 04 18 19 1A 06
29 00 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 = <65000000>;
hactive = <960>; //800
vactive = <1080>; // 1280
hsync-len = <10>; //8//20, 50
hback-porch = <0>;  //8//50, 56
hfront-porch = <95>;//32//50, 30 //1580
vsync-len = <10>; //4
vback-porch = <0>; //11
vfront-porch = <20>; //17
hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
};
};
};
};

Nothing wasn't change when I try use different bus-format:s. I look that my display use VESA standard.

And how I tell config that I use two channel LVDS?

What about panel-init-sequence? I dont find any detail for that in display manual?

Link for manual: http://www.display-solution.com/ ... TN02.0_20160418.pdf

Thanks.
Pekka

leung先森 · Posted at 6/12/2018 14:39:51

peksuj Posted at 6/11/2018 18:20
Hi,

I use this settings:

This display match attached file.

rk3399-firefly-aio-lvds-Dual.rar (3.59 KB, Down times: 26)

peksuj · Posted at 6/13/2018 13:56:26

Hi,

Thanks for that file. I get error when compiling that: "rk3399-firefly-port.dtsi: No such file or directory". I l
search that in kernel from github but didnt find it. Can I use some other dtsi file?

I try to test changing include files, more errors. Try to use &dsi section to old lvds file but problems with lcd pins...

I think we are very close to success

Thanks,
Pekka

peksuj · Posted at 6/13/2018 14:44:53

I also try use "screen-type = <SCREEN_DUAL_MIPI>;" wich I found in kernel/Documentation/devicetree/bindings/video/rockchip_mipidsi_lcd.txt. But get error for that instance...

I use Your sending dts &dsi section and add to &pinctrl section "lcd_panel_pwr_en" function. It now compile but only single LVDS and no picture in display and trying to make two views in display.

I think that I need go back to Raspberry Pi... I use now about 100 hour and three week only trying to get dual LVDS port to work...

Pekka

peksuj · Posted at 6/18/2018 13:58:06

Hi,

How I can get second LVDS channel to work? I cant get there any signals. I look output with osciloscope and I find signals in first channel but nothing in second channel.

Thanks,
Pekka