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How to 4K video output from HDMI

Question asked by Tomokazu Miyazaki on Jun 12, 2018

I have an i.MX 8MQ EVK and now evaluating.

I'm trying to output 4K video via HDMI port, but it does not work.

I was download 'L4.9.88_2.0.0_mfg-tool_MX8MQ.tar.gz' from NXP website and make a SD card for boot that using a script 'mfgtool2-yocto-mx8-evk-sd2.vbs' with Mfgtool2.

 

After making, boot from SD card.
Default is displaied by 1080p60 from HDMI port and it works.

 

I refered some post and changed bootargs setting to 4K output, but not works.

 

Getting an HDMI output on IMX8QMLPDDR4ARM2 

Monitor not working for MCIMX8M-EVK 

Getting a 4K HDMI output on MCIMX8M-EVK 

 

Is it correct procedure?
Or the OS does not support 4K yet?
I'll attached boot log.

Best regards,
tomo

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