5 config SUPPORT_OF_CONTROL
8 menu "Device Tree Control"
9 depends on SUPPORT_OF_CONTROL
12 bool "Run-time configuration via Device Tree"
14 This feature provides for run-time configuration of U-Boot
15 via a flattened device tree.
18 bool "Enable run-time configuration via Device Tree in SPL"
19 depends on SPL && OF_CONTROL
21 Some boards use device tree in U-Boot but only have 4KB of SRAM
22 which is not enough to support device tree. Enable this option to
23 allow such boards to be supported by U-Boot SPL.
26 prompt "Provider of DTB for DT control"
30 bool "Separate DTB for DT control"
33 If this option is enabled, the device tree will be built and
34 placed as a separate u-boot.dtb file alongside the U-Boot image.
37 bool "Embedded DTB for DT control"
39 If this option is enabled, the device tree will be picked up and
40 built into the U-Boot image. This is suitable for local debugging
41 and development only and is not recommended for production devices.
42 Boards in the mainline U-Boot tree should not use it.
45 bool "Host filed DTB for DT control"
48 If this option is enabled, DTB will be read from a file on startup.
49 This is only useful for Sandbox. Use the -d flag to U-Boot to
50 specify the file to read.
54 config DEFAULT_DEVICE_TREE
55 string "Default Device Tree for DT control"
57 This option specifies the default Device Tree used for DT control.
58 It can be overridden from the command line:
59 $ make DEVICE_TREE=<device-tree-name>
61 config OF_SPL_REMOVE_PROPS
62 string "List of device tree properties to drop for SPL"
63 depends on SPL_OF_CONTROL
64 default "clocks clock-names interrupt-parent" if SPL_PINCTRL_FULL
65 default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
67 Since SPL normally runs in a reduced memory space, the device tree
68 is cut down to only what is needed to load and start U-Boot. Only
69 nodes marked with the property "u-boot,dm-pre-reloc" will be
70 included. In addition, some properties are not used by U-Boot and
71 can be discarded. This option defines the list of properties to