Could you tell me how could I get the error infomation when the hdcp authentication failed.
Which registers would indicate this or some other ways?
Thanks a lot!
I've asked the expert on this part to come comment.
If an HDCP authentication fails, the source will typically re-attempt authentication by resending its AKSV and An. You will therefore get an AKSV update interrupt.
If you are continuously getting AKSV updates, that would suggest the authentication is repeatedly failing.
A failing authentication would typically also result in the source not sending video, or sending encrypted video that doesn't get de-encrypted by the ADV748x. This de-encrypted video will look like a salt and pepper noise image.
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