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HDMI display not working with fb0 on iMX6DL Yocto BSP L3.10.17_1.0.2

Question asked by PKZ on Jan 18, 2015
Latest reply on Sep 14, 2015 by Vardhman Modi

Hi


I have been porting linux BSP 3.10.17_1.0.2 BSP (Yocto) for our custom board based on i.MX SDP and using i.MX6DL.

We do not have lvds display on our board (we have only HDMI), not charger, no camera, no GPIO buttons, no audio codec, no ethernet.


So, in the DT files, I have removed all those HW configuration.


The linux boots up, I can see from the debug uart. However, no display on HDMI. the boot argument was set as below (Hdmi on fb0)

setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:off -  does not work, no output to HDMI display


When I tried to set HDMI to fb1, then i can see the display only when the linux is fully booted up, i.e. I do not see the yocto progress bar.

setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} video=mxcfb0:off video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24 – works only if mxcfb0 is set to off

 

Did anyone have similar issue? Any suggestion? I am not very familiar with DT files and so, not sure if there is any dependent code I might removed because i am also having issue with USB H1 (USB H1 not working properly on iMX6DL custom board), but still not solved yet.

 

Thanks and regards,

Paramod

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