x86: quark: Prepare device.h for inclusion by ASL

[u-boot] / dts / Kconfig

diff --git a/dts/Kconfig b/dts/Kconfig
index 83ba7a6e9815a50990083565934442d81123a7e0..c56c1299c09f65e445e80fe1da6e12516b74834c 100644 (file)
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -1,15 +1,11 @@
 #
 # Device Tree Control
 #
 #
 # 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
 
 menu "Device Tree Control"
 
 config SUPPORT_OF_CONTROL
        bool
 
 menu "Device Tree Control"

-       depends on !SPL_BUILD

        depends on SUPPORT_OF_CONTROL
 
 config OF_CONTROL
        depends on SUPPORT_OF_CONTROL
 
 config OF_CONTROL


@@ -18,6 +14,14 @@ config OF_CONTROL
          This feature provides for run-time configuration of U-Boot
          via a flattened device tree.
 
          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
 choice
        prompt "Provider of DTB for DT control"
        depends on OF_CONTROL


@@ -33,7 +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
        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"
 
 config OF_HOSTFILE
        bool "Host filed DTB for DT control"


@@ -47,9 +53,36 @@ endchoice
 
 config DEFAULT_DEVICE_TREE
        string "Default Device Tree for DT control"
 
 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.
        help
          This option specifies the default Device Tree used for DT control.

-         It can be overrided from the command line:
+         It can be overridden from the command line:

          $ make DEVICE_TREE=<device-tree-name>
 
          $ 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
 endmenu