topic Re: how to test hdmi in i.MX Processors

how to test hdmi

chenghaibo — Thu, 10 Dec 2015 10:25:54 GMT

i have configure and build the image like this way

1. source fsl-setup-release.sh -b build_fb -e fb

2. bitbake fsl-image-gui

3. sudo dd if=fsl-image-gui-imx6qsabresd-20151209041615.rootfs.sdcard of=/dev/sdb bs=1M conv=fsync

4. boot setenv bootargs console=ttymxc0,115200 root=/dev/mmcblk2p2 rootwait rw video=mxcfb0:dev=hdmi,1920x1080MM@60,if=RGB24

but after boot, there is no signal on the screen, how to test it, i have tryed the gplay, it not works.

Re: how to test hdmi

igorpadykov — Fri, 11 Dec 2015 02:10:01 GMT

Hi cheng

please follow attached Linux Guide sect.4.7.1 Running Linux from MMC/SD.

For programming sd card one can use mfg tool (use appropriate *.vbs script),

also it is necessary to use "true" hdmi monitor.

Just for test one can try ready Demo images in below package

Board Support Packages (27)

L3.14.28_1.0.0_iMX6QDLS_BUNDLE (REV L3.14.28_1.0.0)

http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=RDIMX6SABREBRD&fpsp=1&tab=Design_Tools_Tab

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

Re: how to test hdmi

chenghaibo — Fri, 11 Dec 2015 07:41:26 GMT

i will test it, when i set the env param in boot stage , the screen work well and display, but after the boot stage, the screen turned to dark, the kernel is 3.14.38

Re: how to test hdmi

igorpadykov — Fri, 11 Dec 2015 08:56:45 GMT

3.14.38 was tested only with i.MX6UL, could you try with 3.14.28

~igor