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How to debug the LVDS on imx6 sabresd platform

Question asked by tang yuan on Jan 14, 2016
Latest reply on Jan 18, 2016 by Rita Wang

HI,

    all,how to debug the LVDS on imx6 sabresd platform.

    I am ready to lighting the LVDS on imx6 sabresd platform

    I modified the main UBOOT args such as:

set displayArgs video=mxcfb0:dev=ldb,LDB-T35,if=RGB24,bpp=32 ldb=dul1 video=mxcfb1:off  video=mxcfb2:off fbmem=48M

   At the same time,i modified the drivers/video/mxc/ldb.c file as follows:

   "LDB-T35", 60, 1280, 720, 15699,

         16, 44,

         5,67,

         2,2,

         0,

         FB_VMODE_NONINTERLACED,

         FB_MODE_IS_DETAILED

 

I also modife arch/arm/mach-mx6/board-mx6q_sabresd.c as follows:

static struct ipuv3_fb_platform_data  sabresd_fb_data[]={

     {

               .disp_dev="ldb",

               .interface_pix_fmt=IPU_PIX_FMT_RGB24,

               .mode_str="LDB-T35",

               .default_bpp=32,

               .int_clk=false,

               .late_init=false,

      },

}

 

But my lvds was still not lighted,my backlight is using voltage 22V

I would like to know how to debug the lvds ?

 

Anyone can help me?

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