There's a wall outlet with a USB-A fast charging port

It has a USB-A charging port that supports 9V 1.67A fast charging.

It uses FP6601Q and supports QC2.0/QC3.0.

I'm trying to change the USB-A charging port to a USB-C charging port, but it doesn't work well.

Can we simply switch A to C port to support 9V 1.67A charging speed without USB-PD negotiations?

Below is a circuit that I made simple. I simply changed the port and connected only pull-up resistance to the cc pin of the usb-c port.

However, it initially charges 9V 1.67A, but after a few minutes, the charging speed drops to 5V 1.67A

I tried all 56k/22k/10k resistance with cc pull up resistance, but the result was the same.

What should I do?

There's a wall outlet with a USB-A fast charging port

It has a USB-A charging port that supports 9V 1.67A fast charging.

It uses FP6601Q and supports QC2.0/QC3.0.

I'm trying to change the USB-A charging port to a USB-C charging port, but it doesn't work well.

Can we simply switch A to C port to support 9V 1.67A charging speed without USB-PD negotiations?

Below is a circuit that I made simple. I simply changed the port and connected only pull-up resistance to the cc pin of the usb-c port.

However, it initially charges 9V 1.67A, but after a few minutes, the charging speed drops to 5V 1.67A

I tried all 56k/22k/10k resistance with cc pull up resistance, but the result was the same.

What should I do?