armv8: configs: ls1012a: correct the generic timer frequency

[people/ms/u-boot.git] / doc / README.fdt-control

diff --git a/doc/README.fdt-control b/doc/README.fdt-control
index 29fd56a815f8086d28e340f030b5a6e6b1755227..378b06b108d9e8bb7c834d585f0e1342eb7b0f46 100644 (file)
--- a/doc/README.fdt-control
+++ b/doc/README.fdt-control
@@ -33,12 +33,6 @@ the features of each board in the device tree file, and have a single
 generic source base.
 
 To enable this feature, add CONFIG_OF_CONTROL to your board config file.
-It is currently supported on ARM, x86 and Microblaze - other architectures
-will need to add code to their arch/xxx/lib/board.c file to locate the
-FDT. Alternatively you can enable generic board support on your board
-(with CONFIG_SYS_GENERIC_BOARD) if this is available (as it is for
-PowerPC). For ARM, Tegra and Exynos5 have device trees available for
-common devices.
 
 
 What is a Flat Device Tree?
@@ -136,6 +130,10 @@ u-boot-dtb.bin which does the above step for you also. If you are using
 CONFIG_SPL_FRAMEWORK, then u-boot.img will be built to include the device
 tree binary.
 
+If CONFIG_OF_BOARD is defined, a board-specific routine will provide the
+device tree at runtime, for example if an earlier bootloader stage creates
+it and passes it to U-Boot.
+
 If CONFIG_OF_HOSTFILE is defined, then it will be read from a file on
 startup. This is only useful for sandbox. Use the -d flag to U-Boot to
 specify the file to read.
@@ -174,22 +172,6 @@ After board configuration is done, fdt supported u-boot can be build in two ways
     $ make DEVICE_TREE=<dts-file-name>
 
 
-Configuration Options
----------------------
-
-A number of run-time configuration options are provided in the /config node
-of the control device tree. You can access these using fdtdec_get_config_int(),
-fdtdec_get_config_bool() and fdtdec_get_config_string().
-
-Available options are:
-
-silent-console
-       If present and non-zero, the console is silenced by default on boot.
-
-no-keyboard
-       Tells U-Boot not to expect an attached keyboard with a VGA console
-
-
 Limitations
 -----------