I'm new here, first project, first freescale device, first post.
I am in the process of evaluating the IMX53 for a new board where I need to output a NTSC video to be displayed on a monitor.
My idea is to use yocto as a main distribution and to create my gui using directfb.
At this point I created my custom image with some accessory program, I can boot it and I can run the directfb demo on the VGA output when I connect the board to my monitor.
I searched around the forum and I found a lot of people asking about how to enable the tv out. I think I read most of them and everyone is related to android and with some command that sould be executed from an android environment.
I didn't found any information about "bare" linux systems.
anyhow... I made some long shot try without any success.
like in this thread: CVBS analog TV out Weilyin Hong is suggesting some command line for android tv out.
set uboot param
setenv bootargs_android 'set bootargs console=ttymxc0,115200 init=/init androidboot.console=ttymxc0 video=mxcdi0fb:RGB24,640x480M@60 hdmi di0_primary gpu_nommu, gpu_memory=64M video=mxcdi1fb:YUV444,mxcdi1fb:TV-NTSC tve'
setenv bootargs_android 'set bootargs console=ttymxc0,115200 init=/init androidboot.console=ttymxc0 video=mxcdi0fb:RGB24,640x480M@60 hdmi di0_primary gpu_nommu, gpu_memory=64M video=mxcdi1fb:YUV444,mxcdi1fb:TV-PAL tve'
after enter android
you can type setprop rw.VIDEO_TVOUT_DISPLAY 1 in your terminal.
so you can play a video and get stand tv singal in VGA pin 3.
I tried to tweak that one a bit for adapting it to my needs, and actually it looks like:
console=ttymxc0,115200 root=/dev/mmcblk0p2 rw rootwait video=mxcdi0fb:RGB666,G121X1 video=mxcdi1fb:YUV444,TV-NTSC ldb=di0 tve di0_primary gpu_nommu gpu_memory=64M
now I can't type the setprop rw.VIDEO_TVOUT_DISPLAY 1 command because it's an android command. Can you suggest what should I do here?
I also tried to see on pin 3 of VGA connector, display is shotdown, if I try to connect a scope I don't see any video signal coming out.
Any hints on how to proceed is apreciated. If you can provide me some documentation that I could have miss or some tests to do would be wonderful.
Thank you for reading my long post,
please forgive any mistake, english is not my primary language