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As already mentioned, DisplayPort exists. The problem is adoption. Even getting DisplayPort adopted as the de facto standard for PC monitors hasn’t done anything to get it built into TVs.
The DisplayPort AUX channel is a half-duplex (bidirectional) data channel used for miscellaneous additional data beyond video and audio, such as EDID (I2C) or CEC commands.
As already mentioned, DisplayPort exists. The problem is adoption. Even getting DisplayPort adopted as the de facto standard for PC monitors hasn’t done anything to get it built into TVs.
also there’s still no alternative to hdmi-cec
DisplayPort supports CEC.
From Wikipedia:
huh didn’t know. does it work in practice tho?