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i.MX6 quad dual display(LVDS+HDMI) issue

Question asked by Dhrumil Doshi on Mar 8, 2018
Latest reply on May 4, 2018 by Diego Adrian Cuevas

Hi,

 

I am trying to interface dual displays onto imx6 Quad custom board. I need run android on both displays LVDS and HDMI. I have used below u-boot script command,

console=ttymxc0,115200 init=/init androidboot.console=ttymxc0 androidboot.hardware=freescale vmalloc=300M androidboot.selinux=disabled consoleblank=0 cma=256M video=mxcfb0:dev=ldb,1200x1920@40,if=RGB24,bpp=32 video=mxcfb1:dev=hdmi,1280x720M@60,if=RGB24 video=mxcfb2:off video=mxcfb3:off androidboot.dm_verity=disabled

 

I have checked the ipu details in boards .dts files for both interfaces,

  • LVDS: ipu=1 & display id=0
  • HDMI: ipu=0 & display id=0

The issue is when I load the android image, I am getting proper image on LVDS display. But, the image on HDMI is not proper. Please check attached images of HDMI monitor and LVDS display.

 

Please help me to solve the issue.

 

Thanks,

Dhrumil

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