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Title: Dual LVDS RK3288 AIO [Print This Page]

Author: WeX Time: 9/30/2020 18:07
Title: Dual LVDS RK3288 AIO
Hello! Has anyone tried to get work a dual channel LVDS display on the aio-rk3288j with firefly sdk? I tried to connect single channel display and it's work perfect, but when I connected dual channel display I have no picture. Display timings is right, on mainline kernel I have normal picture but not on firefly kernel.

dts:
...
&lvds_panel {
      status = "okay";
      compatible ="simple-panel";
      power-supply = <&vcc_lcd>;
      backlight = <&backlight>;
      enable-delay-ms = <10>;
      rockchip,data-mapping = "vesa";
      rockchip,data-width = <24>;
      rockchip,output = "duallvds";
      rockchip,panel = <&lvds_panel>;

      display-timings {
            native-mode = <&timing0>;
            timing0: timing0 {
                     clock-frequency = <122000000>;

                     hactive = <1920>;
                     vactive = <720>;

                     hback-porch = <0>;
                     hfront-porch = <0>;

                     vback-porch = <0>;
                     vfront-porch = <0>;

                     hsync-len = <480>;
                     vsync-len = <120>;

                     hsync-active = <0>;
                     vsync-active = <0>;
                     de-active = <0>;
                     pixelclk-active = <0>;
            };
      };
};
...

Author: BBBBB Time: 5/5/2021 10:56
Hi WeX,

Have you fixed the problem?
I met similar issue.

Thanks.

Author: aricjoshua Time: 12/3/2021 15:01
I am also facing the same problem, hope to find the answer in your post. Thank! cookie clicker

Author: 时间的蝴蝶 Time: 12/9/2021 10:23
RK3288 only supports dual dsi, there is no official case of dual lvds or dsi.

If you want to use dual lvds, one of the lvds needs to be converted output, for example, convert dsi to lvds.

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