This feature provides for run-time configuration of U-Boot
via a flattened device tree.
-config SPL_DISABLE_OF_CONTROL
- bool "Disable run-time configuration via Device Tree in SPL"
- depends on OF_CONTROL
+config SPL_OF_CONTROL
+ bool "Enable run-time configuration via Device Tree in SPL"
+ depends on SPL && OF_CONTROL
help
Some boards use device tree in U-Boot but only have 4KB of SRAM
which is not enough to support device tree. Enable this option to
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.
+ built into the U-Boot image. This is suitable for local debugging
+ and development only and is not recommended for production devices.
+ Boards in the mainline U-Boot tree should not use it.
config OF_HOSTFILE
bool "Host filed DTB for DT control"
It can be overridden from the command line:
$ make DEVICE_TREE=<device-tree-name>
+config OF_SPL_REMOVE_PROPS
+ string "List of device tree properties to drop for SPL"
+ depends on SPL_OF_CONTROL
+ default "clocks clock-names interrupt-parent" if SPL_PINCTRL_FULL
+ default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
+ help
+ Since SPL normally runs in a reduced memory space, the device tree
+ is cut down to only what is needed to load and start U-Boot. Only
+ nodes marked with the property "u-boot,dm-pre-reloc" will be
+ included. In addition, some properties are not used by U-Boot and
+ can be discarded. This option defines the list of properties to
+ discard.
+
endmenu