X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=dts%2FKconfig;h=4b7d8b15cc04d7f3a81ab7edf50268901ee4cf8c;hb=b443c88b1a8dd74a63993d0fee0bec0aaca0d96e;hp=09cfefbd35358adb5335fea0f2dc53eda94be99e;hpb=3c9cc70d7153da442575112d9a2643eecd17d534;p=oweals%2Fu-boot.git

diff --git a/dts/Kconfig b/dts/Kconfig
index 09cfefbd35..4b7d8b15cc 100644
--- a/dts/Kconfig
+++ b/dts/Kconfig
@@ -14,9 +14,9 @@ config OF_CONTROL
 	  This feature provides for run-time configuration of U-Boot
 	  via a flattened device tree.
 
-config SPL_DISABLE_OF_CONTROL
-	bool "Disable run-time configuration via Device Tree in SPL"
-	depends on OF_CONTROL
+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
@@ -37,7 +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"
@@ -51,14 +53,29 @@ 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 OF_CONTROL && 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
@@ -68,4 +85,25 @@ config OF_SPL_REMOVE_PROPS
 	  can be discarded. This option defines the list of properties to
 	  discard.
 
+config SPL_OF_PLATDATA
+	bool "Generate platform data for use in SPL"
+	depends on SPL_OF_CONTROL
+	help
+	  For very constrained SPL environments the overhead of decoding
+	  device tree nodes and converting their contents into platform data
+	  is too large. This overhead includes libfdt code as well as the
+	  device tree contents itself. The latter is fairly compact, but the
+	  former can add 3KB or more to a Thumb 2 Image.
+
+	  This option enables generation of platform data from the device
+	  tree as C code. This code creates devices using U_BOOT_DEVICE()
+	  declarations. The benefit is that it allows driver code to access
+	  the platform data directly in C structures, avoidin the libfdt
+	  overhead.
+
+	  This option works by generating C structure declarations for each
+	  compatible string, then adding platform data and U_BOOT_DEVICE
+	  declarations for each node. See README.platdata for more
+	  information.
+
 endmenu