This feature provides for run-time configuration of U-Boot
via a flattened device tree.
+config OF_BOARD_FIXUP
+ bool "Board-specific manipulation of Device Tree"
+ help
+ In certain circumstances it is necessary to be able to modify
+ U-Boot's device tree (e.g. to delete device from it). This option
+ make the Device Tree writeable and provides a board-specific
+ "board_fix_fdt" callback (called during pre-relocation time), which
+ enables the board initialization to modifiy the Device Tree. The
+ modified copy is subsequently used by U-Boot after relocation.
+
config SPL_OF_CONTROL
bool "Enable run-time configuration via Device Tree in SPL"
depends on SPL && OF_CONTROL
which is not enough to support device tree. Enable this option to
allow such boards to be supported by U-Boot SPL.
+config OF_LIVE
+ bool "Enable use of a live tree"
+ depends on OF_CONTROL
+ help
+ Normally U-Boot uses a flat device tree which saves space and
+ avoids the need to unpack the tree before use. However a flat
+ tree does not support modifcation from within U-Boot since it
+ can invalidate driver-model device tree offsets. This option
+ enables a live tree which is available after relocation,
+ and can be adjusted as needed.
+
choice
prompt "Provider of DTB for DT control"
depends on OF_CONTROL
and development only and is not recommended for production devices.
Boards in the mainline U-Boot tree should not use it.
+config OF_BOARD
+ bool "Provided by the board at runtime"
+ depends on !SANDBOX
+ help
+ If this option is enabled, the device tree will be provided by
+ the board at runtime if the board supports it, instead of being
+ bundled with the image.
+
config OF_HOSTFILE
bool "Host filed DTB for DT control"
depends on SANDBOX
config OF_SPL_REMOVE_PROPS
string "List of device tree properties to drop for SPL"
depends on SPL_OF_CONTROL
- default "interrupt-parent" if SPL_PINCTRL_FULL && SPL_CLK
- default "clocks clock-names interrupt-parent" if SPL_PINCTRL_FULL
+ default "interrupt-parent" if SPL_PINCTRL && SPL_CLK
+ default "clocks clock-names interrupt-parent" if SPL_PINCTRL
default "pinctrl-0 pinctrl-names interrupt-parent" if SPL_CLK
default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
help