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dm: core: Add support for getting node from aliases

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Add support for getting a node/property from aliases.
The similar functionality is provided for chosen node and this
implemenatation is copy of it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Michal Simek 2020-07-28 12:51:08 +02:00
parent c94b44c64b
commit 305d31885f
3 changed files with 66 additions and 0 deletions
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22
include/dm/ofnode.h
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@ -605,6 +605,28 @@ const char *ofnode_read_chosen_string(const char *propname);
*/
ofnode ofnode_get_chosen_node(const char *propname);
/**
* ofnode_read_aliases_prop() - get the value of a aliases property
*
* This looks for a property within the /aliases node and returns its value
*
* @propname: Property name to look for
* @sizep: Returns size of property, or FDT_ERR_... error code if function
* returns NULL
* @return property value if found, else NULL
*/
const void *ofnode_read_aliases_prop(const char *propname, int *sizep);
/**
* ofnode_get_aliases_node() - get a referenced node from the aliases node
*
* This looks up a named property in the aliases node and uses that as a path to
* look up a code.
*
* @return the referenced node if present, else ofnode_null()
*/
ofnode ofnode_get_aliases_node(const char *propname);
struct display_timing;
/**
* ofnode_decode_display_timing() - decode display timings