The first page I linked shows the limitations of ports 3 and 6 in the same manner as the Ryzen 7040 page. Those ports support USB 3.2 and USB-A but don’t support charging or display port.
If you read the section above the graphic, you will see this text:
“Ports 1,2,4,5 are shared on a first come first serve basis. So they are 1.5A by default, but one port from any of these can negotiate 3A over PD. Once that is taken, the other ports are limited to 1.5A. Ports 3,6 are 900mA.”