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mx53 qsb dual output: hdmi kills ethernet

Question asked by koobla on Nov 8, 2012
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Hi all,

I have set up my qsb over the last few days and it works nicely with the mcimx-lvds1 and vga output in dual and separate modes (imx-2.6.35_11.09 plus the  201112 patches applied). It boots nicely with the standard tftp+nfs setup until the HDMI daughter board arrived (I need to setup HDMI+LVDS, independent views):


Whenever I try to enable HDMI output with LVDS (tried with LVDS attached, without LVDS, widh and without DVI / HDMI monitors), the kernel does not boot into user space as initializing the ethernet controller fails. It does boot into the mmc image, though - cf. the boot log that I attached.


Kernel command line: console=tty1 console=ttymxc0,115200 setenv bootargs console=ttymxc0,115200 video=mxcdi0fb:RGB24,1024x768M@60 hdmi di0_primary video=mxcdi1fb:RGB24,1024x768M@60 ldb=di0 lvds debug loglevel=8 dmfc=3


I already started tracing signal lines on the daughter board to see if there could be any conflicts, but no luck so far.

Any ideas on this?




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