AnsweredAssumed Answered

Problem about hot plug detection

Question asked by apkingdt on Jul 26, 2015
Latest reply on Jul 28, 2015 by GuenterL

Hi All:


I used the adv7612 as HDMI receiver and used the adv7511 as HDMI transmitter.

I had to re-plug (unplug and plug ) the input video cable from the input video source every time, then

I can see a correct video in my display. It's annoying, and I don't know how to fix it.

Can anyone kindly answer the problem?


I checked the register. When the adv7612 power up, the 5V for port can be detected, the clock of input video

can not be detected or locked. I unplug the input cable from HDMI source and re-plug it, it works well.


My platform:

adv7612 as HDMI receiver

adv7511 as HDMI transmitter

input source from Intel graphics 4600 HDMI output port 1920x1080@60

I tried to resolve the problem as follow:

1. power down 7612 HDMI chip (0x0C) and power up ---------- doesn't work

2. power down CP core, DPP and digital section of the hdmi core and power up --------- doesn't work

3. set the tristate output and untristate ---------- doesn't work