the ADV7842 allows to set the driver strength of the data bus, clk and sync signals using the register IO_REG_14. I know that the ibis model of adv7842 isn' avaialble. could be possible to use the ibis model of similar device?
IBIS files are too dependent on package parameters, pin out and chip design to just select a similar part IBIS file and attempt to use it.
Without the complete IBIS file for the port you will probably be better off just using generic values such as CMOS 3.3V medium speed in your signal integrity tool.
When we supply the IBIS file, the file will contain only the minimum and maximum drive strength numbers, not the intermediate settings.
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