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.
17 config SPL_DISABLE_OF_CONTROL
18 bool "Disable run-time configuration via Device Tree in SPL"
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.
43 bool "Host filed DTB for DT control"
46 If this option is enabled, DTB will be read from a file on startup.
47 This is only useful for Sandbox. Use the -d flag to U-Boot to
48 specify the file to read.
52 config DEFAULT_DEVICE_TREE
53 string "Default Device Tree for DT control"
55 This option specifies the default Device Tree used for DT control.
56 It can be overridden from the command line:
57 $ make DEVICE_TREE=<device-tree-name>
59 config OF_SPL_REMOVE_PROPS
60 string "List of device tree properties to drop for SPL"
61 depends on OF_CONTROL && SPL
62 default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
64 Since SPL normally runs in a reduced memory space, the device tree
65 is cut down to only what is needed to load and start U-Boot. Only
66 nodes marked with the property "u-boot,dm-pre-reloc" will be
67 included. In addition, some properties are not used by U-Boot and
68 can be discarded. This option defines the list of properties to