u-boot/dts/Kconfig

#
# Device Tree Control
#
# TODO:
#   This feature is not currently supported for SPL,
#    but this restriction should be removed in the future.

config SUPPORT_OF_CONTROL
	bool

menu "Device Tree Control"
	depends on !SPL_BUILD
	depends on SUPPORT_OF_CONTROL

config OF_CONTROL
	bool "Run-time configuration via Device Tree"
	help
	  This feature provides for run-time configuration of U-Boot
	  via a flattened device tree.

choice
	prompt "Provider of DTB for DT control"
	depends on OF_CONTROL

config OF_SEPARATE
	bool "Separate DTB for DT control"
	depends on !SANDBOX
	help
	  If this option is enabled, the device tree will be built and
	  placed as a separate u-boot.dtb file alongside the U-Boot image.

config OF_EMBED
	bool "Embedded DTB for DT control"
	help
	  If this option is enabled, the device tree will be picked up and
	  built into the U-Boot image.

config OF_HOSTFILE
	bool "Host filed DTB for DT control"
	depends on SANDBOX
	help
	  If this option is enabled, DTB will be read from a file on startup.
	  This is only useful for Sandbox.  Use the -d flag to U-Boot to
	  specify the file to read.

endchoice

config DEFAULT_DEVICE_TREE
	string "Default Device Tree for DT control"
	help
	  This option specifies the default Device Tree used for DT control.
	  It can be overridden from the command line:
	  $ make DEVICE_TREE=<device-tree-name>

endmenu