Lines Matching +full:device +full:- +full:tree
2 # Device Tree Control
22 menu "Device Tree Control"
26 bool "Run-time configuration via Device Tree"
29 This feature provides for run-time configuration of U-Boot
30 via a flattened device tree.
33 bool "Board-specific manipulation of Device Tree"
36 U-Boot's device tree (e.g. to delete device from it). This option
37 make the Device Tree writeable and provides a board-specific
38 "board_fix_fdt" callback (called during pre-relocation time), which
39 enables the board initialization to modifiy the Device Tree. The
40 modified copy is subsequently used by U-Boot after relocation.
43 bool "Enable run-time configuration via Device Tree in SPL"
46 Some boards use device tree in U-Boot but only have 4KB of SRAM
47 which is not enough to support device tree. Enable this option to
48 allow such boards to be supported by U-Boot SPL.
51 bool "Enable run-time configuration via Device Tree in TPL"
54 Some boards use device tree in U-Boot but only have 4KB of SRAM
55 which is not enough to support device tree. Enable this option to
56 allow such boards to be supported by U-Boot TPL.
59 bool "Enable use of a live tree"
62 Normally U-Boot uses a flat device tree which saves space and
63 avoids the need to unpack the tree before use. However a flat
64 tree does not support modification from within U-Boot since it
65 can invalidate driver-model device tree offsets. This option
66 enables a live tree which is available after relocation,
77 If this option is enabled, the device tree will be built and
78 placed as a separate u-boot.dtb file alongside the U-Boot image.
83 If this option is enabled, the device tree will be picked up and
84 built into the U-Boot image. This is suitable for local debugging
86 Boards in the mainline U-Boot tree should not use it.
92 If this option is enabled, the device tree will be provided by
101 This is only useful for Sandbox. Use the -d flag to U-Boot to
107 If this option is enabled, the device tree used for DT
108 control will be read from a device tree binary, at a memory
109 location passed to U-Boot by the prior stage bootloader.
114 string "Default Device Tree for DT control"
117 This option specifies the default Device Tree used for DT control.
119 $ make DEVICE_TREE=<device-tree-name>
122 string "List of device tree files to include for DT control"
126 This option specifies a list of device tree files to use for DT
127 control. These will be packaged into a FIT. At run-time, U-boot
130 device tree files (without the directory or .dtb suffix)
144 bool "Support embedding several DTBs in a FIT image for u-boot"
146 This option provides hooks to allow U-boot to parse an
165 string "List of device tree files to include for DT control in SPL"
169 This option specifies a list of device tree files to use for DT
170 control in the SPL. These will be packaged into a FIT. At run-time,
173 device tree files (without the directory or .dtb suffix)
214 bool "User-defined location"
232 aligned on 2-byte boundary.
235 string "List of device tree properties to drop for SPL"
237 default "interrupt-parent" if SPL_PINCTRL && SPL_CLK
238 default "clocks clock-names interrupt-parent" if SPL_PINCTRL
239 default "pinctrl-0 pinctrl-names interrupt-parent" if SPL_CLK
240 default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
242 Since SPL normally runs in a reduced memory space, the device tree
243 is cut down to only what is needed to load and start U-Boot. Only
244 nodes marked with the property "u-boot,dm-pre-reloc" will be
245 included. In addition, some properties are not used by U-Boot and
255 device tree nodes and converting their contents into platform data
257 device tree contents itself. The latter is fairly compact, but the
260 This option enables generation of platform data from the device
261 tree as C code. This code creates devices using U_BOOT_DEVICE()
268 declarations for each node. See of-plat.txt for more information.
276 device tree nodes and converting their contents into platform data
278 device tree contents itself. The latter is fairly compact, but the
281 This option enables generation of platform data from the device
282 tree as C code. This code creates devices using U_BOOT_DEVICE()
289 declarations for each node. See of-plat.txt for more information.