How to use LVDS and HDMILVDS HDMI on MCIMX6QP-SDB

[danny_li]

Hi All

   evaluation board: MCIMX6QP-SDB      Linux BSP：4.14.78_1.0.0 ;

  image: fsl-image-qt5-validation-imx-imx6qsabresd-20200413075132.rootfs.bz2;

 1. I need to implement the display function,use HDMI or LVDS,use one of them,Which parameters need to be set, Are there application notes or guidance documents?

  2. What do I need to set in the boot and kernel, I'm confused right now，About the use of the new version of BSP，Debugging  HDMI display  or LVDS display, Can you provide some guidance documents, thanks.

[radhikasomaiya]

Hi danny.li@weikeng.com.cn ,

For HDMI and LVDS display you can set mmcargs using u-boot setenv command.

      HDMI
            setenv displayinfo 'video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24'
            setenv mmcargs ${mmcargs} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24

      LVDS
            setenv displayinfo 'video=mxcfb0:dev=ldb,if=RGB666'
            setenv mmcargs ${mmcargs} video=mxcfb0:dev=ldb,if=RGB666

For different display you can refer Specifying display section from section 4.7 Running Linux OS on the target of i.MX Linux User's guide as per below.

Regards 

Radhika Somaiya.