DVI and HDMI use the same signaling. Below are the major difference between two
DVI: HDMI Transmitter like ADV7511 supports both HDMI and DVI modes. In DVI mode no packets will be sent, and all registers relating to packets and infoframes will be disregarded. DVI only supports the RGB colorspace, so, if the input is not RGB, it is important to remember to set the color space conversion to output RGB when DVI mode is enabled
HDMI: HDMI carries audio/video data and info-frame packages in the blanking areas. We know a video stream is HDMI when an AVI infoframe packet is detected.