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How to change aspect ratio of LVDS display for iMX6Q-SABRE-SDB

Question asked by yuuki on Feb 29, 2016
Latest reply on Mar 3, 2016 by jimmychan

Dear all,

 

We test Dual Display of HDMI+LVDS on MX6Q-SABRE-SDB.
We use AndroidKK4.4.3_ BSP.

 

HDIM: FullHD(1920x1080)
LVDS: 1024x768 (attachment with SABRE-SDP)

 

We set a parameter of U-Boot as follows.

 

setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0 vmalloc=400M init=/init video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:dev=ldb,if=RGB666 video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale cma=384M

 

The HDMI is output correctly.
However, the LVDS output does not match with LCD panel size.

The touch panel does not match the output size, too.

 

Please refer to an attached file.

The size seems to be output at 16:9

 

Would you tell me how to match the spectrum ratio with an LCD panel?

 

Best Regards,
Yuuki

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