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i.MX6Q LVDS split mode outputs LVDS1 only

Question asked by torus1000 on Apr 12, 2015
Latest reply on Jul 16, 2015 by osmarfrisonjunior2



I have 1920x1080 LVDS panel and modified device tree source (dtsi) of i.mx6q yocto L.3.10.53.
Then I tried ldb split mode (ldb=spl0) as following.


  U-Boot> setenv displayinfo video=mxcfb1:dev=ldb,if=RGB24 ldb=spl0 fbmem=24M
  U-Boot> boot

  Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk1p2 rootwait rw
  video=mxcfb1:dev=ldb,if=RGB24 ldb=spl0 fbmem=24M

LVDS1 looked OK but LVDS0 (neither clock nor data) output nothing.

Can anyone help me to output both LVDS ports in split mode(2 ports for 1 panel)?


Actual fbset was as following...


  > fbset
  mode "960x1080-52"
      # D: 74.250 MHz, H: 60.861 kHz, V: 52.018 Hz
      geometry 960 1080 960 1088 16
      timings 13468 60 60 23 22 140 45
      rgba 5/11,6/5,5/0,0/0