Maybe ditch the CH224K?

[elektrinis]

Supply chain issues of covid years and my 20+ years experience in electronics have taught me that it is wise not to develop a product around someone else's proprietary product, that could go obsolete, disappear or become difficult to get. Huge problems, on top of it costing money. So the chip could probably be discarded?
According to this arduino code for QC3, it is possible to interface the USB directly, completely ditching the chip. Implementing this in code would possibly allow future upgrades for QC4 and QC5, that offer power levels above 100W.
Anyone tried this?

[wagiminator]

Hi, please understand that my projects are mainly designed to experiment with interesting chips (or other components). In this case it was the CH224K, which is quite new and far from obsolete. So it doesn't make sense for me to leave out the CH224K if I want to experiment with it. In addition, the focus of this project is clearly USB-PD, QC doesn't actually interest me at all and I think it's on a declining path anyway. As far as I know, there is no software implementation of USB-PD for AVR. Of course, this is all my subjective point of view, but as a hobbyist it is the relevant one for me, since I don't have to develop for others.