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Component Video Output on freescale i.MX51

October 11th, 2011 Leave a comment Go to comments

The component video is connected directly to i.MX51 processor. If you want to test the component video output on your Android based platform, you can use the following command.

Once the system boots, press control-C to stop booting. Now give the following command at U-boot

>setenv bootargs_base setenv bootargs console=ttymxc0,115200 di1_primary gpu_nommu, gpu_memory=32M video=mxcdi1fb:YUV444,TV-720P60 dmfc=3 tve

Now boot the system by giving boot command

> boot

When the system fully boots up to android , use the following command to blank or display the content at LCD


#echo 1 >/sys/class/graphics/fb1/blank
#echo 0 >/sys/class/graphics/fb0/blank

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  1. Jim Mc
    October 12th, 2011 at 05:13 | #1

    The 1st command looks good. The TV display is available. But when I give this command, it does not give output on LCD.

  2. Mogambu
    October 12th, 2011 at 05:15 | #2

    Just to add

    #echo 0 >/sys/class/graphics/fb0/blank – This will enable display at TV
    #echo 1 >/sys/class/graphics/fb0/blank – Will blank the display at TV