【IMX8MP】Weston How to set up two HDMI primary and secondary display devices

[LoopLou]

Hello.

I used two HDMI devices in my project, now I want to configure weston to specify these two HDMI primary and secondary display devices, how do I need to configure?

ls /sys/class/drm
card0 card1 card1-DSI-1 card1-HDMI-A-1 renderD128 version

I tried configuring /etc/profile.d/weston.sh：

export WESTON_DRM_PRIMARY=HDMI-A-1

But it didn't work.

[joanxie]

current bsp supports dual display already, they are extend mode, for the second display, you need insert mouse and click the second display to enable it

[LoopLou]

actually I can already display the weston interface on 2 HDMI, yes they are extended mode, what I want to solve is how to set the HDMI-A-1 screen to be the main monitor.
thank you.

[joanxie]

what bsp version do you use? did you use HDMI+mipi dsi, right?

[LoopLou]

Yes, that's right. and I used BSP 5.15.71 2.2.0 Release.

[joanxie]

maybe you need change the dts file,  I checked

display-subsystem {
compatible = "fsl,imx-display-subsystem";
ports = <&lcdif1_disp>,
<&lcdif2_disp>,
<&lcdif3_disp>;
};

https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/arch/arm64/boot/dts/freescale/imx8mp.dtsi