NAME

OF_child, OF_parent, OF_peer — navigate device tree

SYNOPSIS

#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>

phandle_t
OF_child(phandle_t node);

phandle_t
OF_parent(phandle_t node);

phandle_t
OF_peer(phandle_t node);

DESCRIPTION

OF_child() returns the phandle value of the first child of the node. Zero is returned if there are no child nodes.

OF_parent() returns the phandle for the parent of the node. Zero is returned if node is the root node.

OF_peer() returns the phandle value of the next sibling of the node. Zero is returned if there is no sibling node.

EXAMPLES

phandle_t node, child;
 ...
for (child = OF_child(node); child != 0; child = OF_peer(child) {
	...
}

SEE ALSO

OF_finddevice(9)

AUTHORS

This manual page was written by Oleksandr Tymoshenko <gonzo@FreeBSD.org>.