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i.mx53 smd :  cvbs work  as green screen,why?

Question asked by Peter Xia on Aug 25, 2014

Hi All,


     I am working on the iMX53 SMD running uBoot and android and I tried to have a LVDS screen (fb0 primary) and a CVBS (fb1) output working at the same time.

The LVDS is fine and display exactly what I want but the CVBS output doesn't work properly:

     - I get some video on my connected screen in PAL or NTSC format but the colours are wrong.

     - Then it does display my test images but the colours don't match (see pics)


cvbs green screen:



lvds works fine:




     Android: androidR10.3

     iMX53 SMD

     uboot args:

          setenv bootargs 'console=ttymxc0 init=/init androidboot.console=ttymxc0 video=mxcdi0fb:RGB666,G121X1 video=mxcdi1fb:YUV444,TV-PAL ldb=di0 tve di0_primary gpu_nommu gpu_memory=64M'