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dm: core: Split ofnode_path_root() into two functions

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This function turns out to be a little confusing since it looks up a path
and also registers the tree. Split it into two, one that gets the root
node and one that looks up a path, so the purpose is clear.

Registering the tree will happen in a function to be added in a later
patch, called oftree_from_fdt().

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-09-06 20:27:24 -06:00
committed by Tom Rini
parent 2187cb7e4a
commit b7bd94f1a8
5 changed files with 55 additions and 13 deletions
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16
include/dm/ofnode.h
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@@ -855,18 +855,28 @@ int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
ofnode ofnode_path(const char *path);
/**
* ofnode_path_root() - find a node by full path from a root node
* oftree_path() - find a node by full path from a root node
*
* @tree: Device tree to use
* @path: Full path to node, e.g. "/bus/spi@1"
* Return: reference to the node found. Use ofnode_valid() to check if it exists
*/
ofnode ofnode_path_root(oftree tree, const char *path);
ofnode oftree_path(oftree tree, const char *path);
/**
* oftree_root() - get the root node of a tree
*
* @tree: Device tree to use
* Return: reference to the root node
*/
ofnode oftree_root(oftree tree);
/**
* ofnode_read_chosen_prop() - get the value of a chosen property
*
* This looks for a property within the /chosen node and returns its value
* This looks for a property within the /chosen node and returns its value.
*
* This only works with the control FDT.
*
* @propname: Property name to look for
* @sizep: Returns size of property, or `FDT_ERR_...` error code if function