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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / 24862c640ea50ac88be343161eb681bea5dbfeef / . / dts / Kconfig
blob: d639be9a078e3edc0c49091576ebc3f761c441f8 [file] [log] [blame]
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]1#
2# Device Tree Control
3#
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]4
5config SUPPORT_OF_CONTROL
6 bool
7
8menu "Device Tree Control"
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]9 depends on SUPPORT_OF_CONTROL
10
11config OF_CONTROL
12 bool "Run-time configuration via Device Tree"
13 help
14 This feature provides for run-time configuration of U-Boot
15 via a flattened device tree.
16
Masahiro Yamadadffb86e2015-08-12 07:31:54 +0900[diff] [blame]17config SPL_OF_CONTROL
18 bool "Enable run-time configuration via Device Tree in SPL"
19 depends on SPL && OF_CONTROL
Simon Glass2860f032015-02-27 22:06:38 -0700[diff] [blame]20 help
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.
24
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]25choice
26 prompt "Provider of DTB for DT control"
27 depends on OF_CONTROL
28
29config OF_SEPARATE
30 bool "Separate DTB for DT control"
31 depends on !SANDBOX
32 help
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.
35
36config OF_EMBED
37 bool "Embedded DTB for DT control"
38 help
39 If this option is enabled, the device tree will be picked up and
Simon Glass3d3f60c2015-08-31 18:47:52 -0600[diff] [blame]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.
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]43
44config OF_HOSTFILE
45 bool "Host filed DTB for DT control"
46 depends on SANDBOX
47 help
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.
51
52endchoice
53
Masahiro Yamadaf1ef2b62014-09-22 19:59:06 +0900[diff] [blame]54config DEFAULT_DEVICE_TREE
55 string "Default Device Tree for DT control"
56 help
57 This option specifies the default Device Tree used for DT control.
Robert P. J. Day5699ea62014-10-21 16:44:32 -0400[diff] [blame]58 It can be overridden from the command line:
Masahiro Yamadaf1ef2b62014-09-22 19:59:06 +0900[diff] [blame]59 $ make DEVICE_TREE=<device-tree-name>
60
Simon Glassfa78e0a2015-06-23 15:38:29 -0600[diff] [blame]61config OF_SPL_REMOVE_PROPS
62 string "List of device tree properties to drop for SPL"
Masahiro Yamada897705e2015-08-28 20:28:42 +0900[diff] [blame]63 depends on SPL_OF_CONTROL
Masahiro Yamada5f3f7b72016-02-03 20:51:36 +0900[diff] [blame]64 default "interrupt-parent" if SPL_PINCTRL_FULL && SPL_CLK
Masahiro Yamada6aa81792015-08-31 19:36:24 +0900[diff] [blame]65 default "clocks clock-names interrupt-parent" if SPL_PINCTRL_FULL
Masahiro Yamada5f3f7b72016-02-03 20:51:36 +0900[diff] [blame]66 default "pinctrl-0 pinctrl-names interrupt-parent" if SPL_CLK
Simon Glassfa78e0a2015-06-23 15:38:29 -0600[diff] [blame]67 default "pinctrl-0 pinctrl-names clocks clock-names interrupt-parent"
68 help
69 Since SPL normally runs in a reduced memory space, the device tree
70 is cut down to only what is needed to load and start U-Boot. Only
71 nodes marked with the property "u-boot,dm-pre-reloc" will be
72 included. In addition, some properties are not used by U-Boot and
73 can be discarded. This option defines the list of properties to
74 discard.
75
Masahiro Yamada783e6a72014-09-22 19:59:05 +0900[diff] [blame]76endmenu