The chosen node --------------- The chosen node does not represent a real device, but serves as a place for passing data like which serial device to used to print the logs etc stdout-path property -------------------- Device trees may specify the device to be used for boot console output with a stdout-path property under /chosen. Example ------- / { chosen { stdout-path = "/serial@f00:115200"; }; serial@f00 { compatible = "vendor,some-uart"; reg = <0xf00 0x10>; }; }; tick-timer property ------------------- In a system there are multiple timers, specify which timer to be used as the tick-timer. Earlier it was hardcoded in the timer driver now since device tree has all the timer nodes. Specify which timer to be used as tick timer. Example ------- / { chosen { tick-timer = "/timer2@f00"; }; timer2@f00 { compatible = "vendor,some-timer"; reg = <0xf00 0x10>; }; };