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dual display (LVDS + VGA) support on mx53

Question asked by Patrick Chau on Oct 15, 2012
Latest reply on Jan 28, 2013 by Patrick Chau
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Hi All:

          We have a project which requires dual display support (LVDS + VGA), both of the displays should show the same content, which means one of the display content is cloned from the other one, is it possible to do so, we tried the following configuration:

 

          setenv bootargs console=ttymxc0,115200 video=mxcdi0fb:RGB24,XGA video=mxcdi1fb:GBR24,VGA-XGA vga di1_primary ldb=dual,di=1,ch0_map=SPWG,ch1_map=SPWG root=/dev/mmcblk0p1 rootwait rw

 

          Which seems partiailly working, but the clock on VGA is wrong, it is 69Hz, which suppose 60Hz, and also the content on LVDS display is masked with green, seems something wrong with the color space.

 

          Anybody has the experience on setting dual display like that?

 

         Thanks for your help in advance.

 

B. Regrads.

Patrick

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