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>; }; }; u-boot,spl-boot-order property ------------------------------ In a system using an SPL stage and having multiple boot sources (e.g. SPI NOR flash, on-board eMMC and a removable SD-card), the boot device may be probed by reading the image and verifying an image signature. If the SPL is configured through the device-tree, the boot-order can be configured with the spl-boot-order property under the /chosen node. Each list element of the property should specify a device to be probed in the order they are listed: references (i.e. implicit paths), a full path or an alias is expected for each entry. Example ------- / { chosen { u-boot,spl-boot-order = &sdmmc, "/sdhci@fe330000"; }; };