what does it mean for DisplayPort to be "open-source"

what is the source of DisplayPort

is it the standard that says "DISTRIBUTION TO NON-MEMBERS IS PROHIBITED" on every page? is this what we call "open-source" now?
is it the technology that is patented by at least 10 companies (the full list isn't known) including Apple? is this "open-source"?
is it the compliance test suite and Verilog code that is available from VESA under an OSI-approved licensaahahahahahahaha I cannot do this anymore

*wipes tears* is it the lack of content protection, ensuring our lives will continue DRM-free?

*checks spec* no it just uses HDCP, exactly like HDMI

is it the DisplayPort logo and name, which can be used free of charge and without restrictions by anyone implementing the standard?

*checks VESA marketing guidelines* no, that's not it either!

so it turns out that DisplayPort is "open-source" because VESA (a consortium of multinational corporations) does not, as of present day, have a history of impeding some of the other multinational corporations from releasing some of the related code under an open-source license

that's a pretty weak definition of "open-source", folks

also if you call your HDMI port a "○○MI" port or whatever, the HDMI Forum can't go after you any more VESA can, go wild, everyone does this

@whitequark like the adafruit boards with their DVI ports. Which use an HDMI plug by accident ;-)