Specification of HDMI state:
An HDMI Sink shall not assert high voltage level on its Hot Plug Detect pin when the E-EDID is not available for reading …, even if the Sink is powered-off or in standby.
How can I know about ready for reading internal EDID?
That is, when will be prepared data in internal RAM by EDID/Repeater controller and how can I know about this that I can assert right level on HPD?
How is deciding this problem in “Power-down Mode 0” (pin “PWRDNB”=0)?