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IMX-MIPI-HDMI Linux L4.9.88_2.0.0

Question asked by Shawn Nageli on Jun 5, 2018
Latest reply on Sep 25, 2018 by Rutvij Trivedi

I have been working to get the MIPI to HDMI adapter working with L4.9.88_2.0.0 (stock image).  When going into u-boot it could not find fsl-imx8mq-evk-dcss-adv7535.dtb.  It is not installed in the stock image.


I found in the Linux Binary Demo Images - i.MX 8MQuad EVK folder several .dtb files one if which included Image-fsl-imx8mq-evk-dcss-adv7535.dtb.  I copied this to the same directly I found he default dtb file ( /run/media/mmcblk0p1 ).  Once this was installed I was able to set in u-boot to this dtb and ran fine.


HDMI output functioned properly before and now it should display the incoming HDMI input the HDMI-MIPI adapter.  I have an HDMI signal generator and have tried several video formats, resolutions, and frame rates but cannot get it to display anything.  I do see the monitoring trying to display but cannot seem to get an image through.


The adapter is plugged into J1501 as instructed.  


Is there a list of acceptable HDMI resolutions and frame rates?  Is it HDCP compatible?