net: designware: Make driver independent from DM_GPIO again

[people/ms/u-boot.git] / dts / Kconfig

diff --git a/dts/Kconfig b/dts/Kconfig
index ca5bd6fb46626eafb7b0f15d023d243b79783f93..c56c1299c09f65e445e80fe1da6e12516b74834c 100644 (file)
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -1,9 +1,6 @@
 #
 # Device Tree Control
 #
-# TODO:
-#   This feature is not currently supported for SPL,
-#    but this restriction should be removed in the future.
 
 config SUPPORT_OF_CONTROL
        bool
@@ -17,6 +14,14 @@ config OF_CONTROL
          This feature provides for run-time configuration of U-Boot
          via a flattened device tree.
 
+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
+         allow such boards to be supported by U-Boot SPL.
+
 choice
        prompt "Provider of DTB for DT control"
        depends on OF_CONTROL
@@ -32,7 +37,9 @@ config OF_EMBED
        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"
@@ -46,9 +53,36 @@ endchoice
 
 config DEFAULT_DEVICE_TREE
        string "Default Device Tree for DT control"
+       depends on OF_CONTROL
        help
          This option specifies the default Device Tree used for DT control.
          It can be overridden from the command line:
          $ make DEVICE_TREE=<device-tree-name>
 
+config OF_LIST
+       string "List of device tree files to include for DT control"
+       depends on SPL_LOAD_FIT
+       default DEFAULT_DEVICE_TREE
+       help
+         This option specifies a list of device tree files to use for DT
+         control. These will be packaged into a FIT. At run-time, SPL will
+         select the correct DT to use by examining the hardware (e.g.
+         reading a board ID value). This is a list of device tree files
+         (without the directory or .dtb suffix) separated by <space>.
+
+config OF_SPL_REMOVE_PROPS
+       string "List of device tree properties to drop for SPL"
+       depends on SPL_OF_CONTROL
+       default "interrupt-parent" if SPL_PINCTRL_FULL && SPL_CLK
+       default "clocks clock-names interrupt-parent" if SPL_PINCTRL_FULL
+       default "pinctrl-0 pinctrl-names interrupt-parent" if SPL_CLK
+       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