summaryrefslogtreecommitdiff
path: root/README
diff options
context:
space:
mode:
authorSimon Glass <sjg@chromium.org>2011-05-10 11:35:57 -0700
committerSimon Glass <sjg@chromium.org>2011-08-24 10:01:31 -0700
commit4899ec44f130a0c3d8de72a7208b6bf6e2b24017 (patch)
tree12747c9cc9d7e5334f19978f6840f77021e1b259 /README
parentb285f261579d311b3b6c25799dc078b6ad352645 (diff)
fdt: Add device tree control of U-Boot peripherals (CONFIG_OF_CONTROL)
This adds a device tree pointer to the global data. It can be set by board code. A later commit will add support for embedding it in U-Boot. BUG=chromium-os:11623 TEST=Build and boot U-Boot Change-Id: I9bda9e75e088a2218e7429b550d9cd0299d728a0 Reviewed-on: http://gerrit.chromium.org/gerrit/620 Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'README')
-rw-r--r--README11
1 files changed, 11 insertions, 0 deletions
diff --git a/README b/README
index b1a5317686..c691fa7d0b 100644
--- a/README
+++ b/README
@@ -746,6 +746,17 @@ The following options need to be configured:
XXX - this list needs to get updated!
+- Device tree:
+ CONFIG_OF_CONTROL
+ If this variable is defined, U-Boot will use a device tree
+ to configure its devices, instead of relying on statically
+ compiled #defines in the board file. This option is
+ experimental and only available on a few boards. The device
+ tree is available in the global data as gd->blob.
+
+ U-Boot needs to get its device tree from somewhere. This will
+ be enabled in a future patch.
+
- Watchdog:
CONFIG_WATCHDOG
If this variable is defined, it enables watchdog