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7511: force hot-plug interrupt

Question asked by rdahd on Apr 17, 2012
Latest reply on Apr 19, 2012 by GuenterL

Is there a method to force the ADV7511 to generate a Hot Plug Detect (HPD) interrupt?


My intent is to cover two use cases:

  • the HDMI sink is "cold-plugged", i.e. the sink device is plugged in before the 7511 is powered up; and
  • the firmware needs to force "re-initialization" after an exception condition is thrown in the firmware (and unrelated to the 7511) is caught.

I've tried using the power-down register (0x41[6]) and the EDID re-read register (0xC9[4]), but neither register write results in an HPD interrupt.