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TPD12S016: HDMI HPD signal was toggled when HDMI cable was plugged out, then plugged in.

Part Number: TPD12S016

Dear Sir,

I designed one product with Netra and TPD12S016.  I found one issue when the user connected our product to the TV from Skyworth vendor.

The issue is as following.

1. The display is normal when I powered up our device which connected to Skyworth TV with HDMI cable. The resolution is 1080P60.

2. Then, there is no display when I plug out the HDMI cable, then plug in HDMI cable.

3. I tested the HPD signal with nothing display and found the HPD signal was toggled.  Pls refer to the schematics and the snapshot of wavform of HPD signal.

Could you please give me any hints on this HPD issue? Thanks.