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>.

Debian                                            April 9, 2018                                      OF_CHILD(9)