Clavinova Smart Pianist pianos (currently two models: CSP-150 and the CSP-170) are fully compatible with Playground. Both of the models have MIDI and USB to HOST ports, so you can use either a MIDI to USB cable, or a USB B to A cable to connect your piano to your computer.
To connect to a tablet, make sure to also purchase a corresponding adapter. Please visit these pages for more details on how to connect a tablet:
Connecting an Android tablet: https://support.playgroundsessions.com/hc/en-us/articles/360000844746-Is-Playground-available-on-Android-tablets-