OF_CHILD(9)            FreeBSD Kernel Developer's Manual           OF_CHILD(9)

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>.

FreeBSD 13.1-RELEASE-p6          April 9, 2018         FreeBSD 13.1-RELEASE-p6