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BSP is linux L3.14.28_1.0.0-ga,How to adjust the brightness of the screen

Question asked by haibo he on Aug 13, 2015
Latest reply on Aug 13, 2015 by haibo he

BSP is linux L3.14.28_1.0.0-ga

 

Boot setting:bootargs_mmc=setenv bootargs ${bootargs} root=/dev/mmcblk3p1 rootwait rw video=mxcfb0:dev=ldb,if=RGB666 ldb=sin0

 

Through the LVDS0 output, the screen is very dark

 

How to adjust the brightness of the screen

 

Please help

 

thanks

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