The CD3215C00 is the USB-C port controller that negotiates 20v from the USB-C charger. BE AWARE: CD3215B03 will NOT work in place of a CD3215C00. Most are selling CD3215B03 which will never allow you to get 20v on the charger. This is the real CD3215C00.
Also be aware you need PP3V3_G3H to be present before you can blame the chip. If you do not have PP3V3_G3H on your board, you might have an ISL9239 problem where ISL9239 is not sending the enable to the PP3V3_G3H regilator to turn it on.
Compatible boards : 820-00244 820-00875 820-00281 820-00840 820-00239 820-00923