Hi Darshak
HDMI EMI/EMC issues can be fixed with proper signal layout and connections
described in sect.3.5. Trace impedance recommendations, sect.3.8. HDMI port connectivity
i.MX8M Hardware Developer’s Guide
https://www.nxp.com/docs/en/user-guide/IMX8MDQLQHDG.pdf
Usage common mode chokes can be found on p.6 schematic MIPI to HDMI Converter card :
Schematics (4)
Design Files for the MIPI to HDMI Converter (IMX-MIPI-HDMI)(REV 0)
i.MX 8M Evaluation Kit|NXP
In general drive strength can be changed with HDMI firmware, described in
sect.6.1.6.2 HDMI image boot up i.MX8MDQ Reference Manual, but this is not
supported in linux bsps.
https://www.nxp.com/docs/en/reference-manual/IMX8MDQLQRM.pdf
Best regards
igor
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