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iMX6Q: HDMI can not support 1024x768

Question asked by jie jia on Mar 23, 2015
Latest reply on Apr 2, 2015 by jie jia



My MX6Q board is basically based on SABRELITE platform.

The HDMI port works well with "1920x1080@60HZ",

with the following kernel cmd line:

setenv hdmiargs  'video=mxcfb0:dev=hdmi,1920x1080@60,if=RGB24,bpp=32'


However, if I change the hdmiargs to 1024x768:

setenv hdmiargs  'video=mxcfb0:dev=hdmi,1024x768@60,if=RGB24,bpp=32'

The HDMI resolution is 640x480


I try to add 1024x768 to mxc_cea_mode[64] in mxc_edid.c, but I can't see anything in the screen. The terminal print these information every 3 or 4 seconds :

      Display is GTF capable

mxc_hdmi mxc_hdmi: same edid

How can I set the HDMI support 1024x768?