We have found some ADV7619 with no "-P" parts. These seems to be more available than the -P parts, ironically! We signed an agreement with HDCP in order to have these installed legally but we want these parts to not decode HDCP by default. I have found a way to avoid HDCP decoding by setting the HDCP_A0 bit to 1, i.e. sets the I2C address to HDCP port to 0x76 instead of 0x74. However, I am concerned that maybe in some setups, this protection will not be enough.
Do you have any tricks on how to disable HDCP decoding by its register interface or any means?