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dm: core: Set device tree node for root device

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The root device corresponds to the root device tree node, so set this up.
Also add a few notes to the documentation.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-01-25 08:26:58 -07:00
parent 040b69af72
commit 2f3b95dbc7
2 changed files with 7 additions and 0 deletions
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4
doc/driver-model/README.txt
View File

@ -363,6 +363,10 @@ can leave out platdata_auto_alloc_size. In this case you can use malloc
in your ofdata_to_platdata (or probe) method to allocate the required memory,
and you should free it in the remove method.
The driver model tree is intended to mirror that of the device tree. The
root driver is at device tree offset 0 (the root node, '/'), and its
children are the children of the root node.
Declaring Uclasses
------------------

3
drivers/core/root.c
View File

@ -49,6 +49,9 @@ int dm_init(void)
ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
if (ret)
return ret;
#ifdef CONFIG_OF_CONTROL
DM_ROOT_NON_CONST->of_offset = 0;
#endif
ret = device_probe(DM_ROOT_NON_CONST);
if (ret)
return ret;