TPS65987D: TPS65987D works with HD3SS460, no DisplayPort signal output

Hi TI team,

We have a project that used TPS65987 and HD3SS460 to implement DP ALT mode on the Source side. The schematic is attached.

typec_ti.pdf

Now the TPS65987 can be programmed by the Application tool. And the PD status works fine (5V/3A is good), and the UFP device can be detected when making a TypeC monitor plugged.  But no Displayport signal output！！！The program project file is attached.

test_tps65987.pjt

Using the Application tool debug mode, below are some screenshot for reference.

Looking forward to your response. Thanks!