1000 Amp Layout Steam Controller (2015) Right trackpad is the mouse.
Mouse Inputs Keyboard Inputs
Simple arrow key map Steam Deck about 7 hours
combined playtime Maps directional keys to trackpad. Maps up arrow to A
Mouse Inputs Keyboard Inputs
Touch Controls v.1.0 Mobile Touch 8 minutes
combined playtime Touch controls for phones v1.0. NinthGen.com
Keyboard Inputs