Devices supported by WP77xx as USB Host through HSIC

USB flash drives are supported when plugged into CN304, i.e. the WP77xx enumerates them and they can be mounted. I can see that the Red has a CP2130 USB/SPI bridge connected as a USB peripheral device. More generally, is there a list somewhere of which other devices are supported in WP77xx host mode through the HSIC?

I have tried webcam before:

Thanks for the example.