diff --git a/doc/develop/driver-model/livetree.rst b/doc/develop/driver-model/livetree.rst
index fb2969259d..c29f29b205 100644
--- a/doc/develop/driver-model/livetree.rst
+++ b/doc/develop/driver-model/livetree.rst
@@ -225,6 +225,23 @@ freed. Then the tree can be scanned for these 'separately allocated' nodes and
 properties before freeing the memory block.
 
 
+Multiple livetrees
+------------------
+
+The livetree implementation was originally designed for use with the control
+FDT. This means that the FDT fix-ups (ft_board_setup() and the like, must use
+a flat tree.
+
+It would be helpful to use livetree for fixups, since adding a lot of nodes and
+properties would involve less memory copying and be more efficient. As a step
+towards this, an `oftree` type has been introduced. It is normally set to
+oftree_default() but can be set to other values. Eventually this should allow
+the use of FDT fixups using the ofnode interface, instead of the low-level
+libfdt one.
+
+See dm_test_ofnode_root() for some examples.
+
+
 Internal implementation
 -----------------------
 
diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c
index c20b19cb50..0e5915a43e 100644
--- a/drivers/core/of_access.c
+++ b/drivers/core/of_access.c
@@ -343,24 +343,30 @@ static struct device_node *__of_find_node_by_path(struct device_node *parent,
 #define for_each_property_of_node(dn, pp) \
 	for (pp = dn->properties; pp != NULL; pp = pp->next)
 
-struct device_node *of_find_node_opts_by_path(const char *path,
+struct device_node *of_find_node_opts_by_path(struct device_node *root,
+					      const char *path,
 					      const char **opts)
 {
 	struct device_node *np = NULL;
 	struct property *pp;
 	const char *separator = strchr(path, ':');
 
+	if (!root)
+		root = gd->of_root;
 	if (opts)
 		*opts = separator ? separator + 1 : NULL;
 
 	if (strcmp(path, "/") == 0)
-		return of_node_get(gd->of_root);
+		return of_node_get(root);
 
 	/* The path could begin with an alias */
 	if (*path != '/') {
 		int len;
 		const char *p = separator;
 
+		/* Only allow alias processing on the control FDT */
+		if (root != gd->of_root)
+			return NULL;
 		if (!p)
 			p = strchrnul(path, '/');
 		len = p - path;
@@ -383,7 +389,7 @@ struct device_node *of_find_node_opts_by_path(const char *path,
 
 	/* Step down the tree matching path components */
 	if (!np)
-		np = of_node_get(gd->of_root);
+		np = of_node_get(root);
 	while (np && *path == '/') {
 		struct device_node *tmp = np;
 
@@ -791,7 +797,7 @@ int of_alias_scan(void)
 
 		name = of_get_property(of_chosen, "stdout-path", NULL);
 		if (name)
-			of_stdout = of_find_node_opts_by_path(name,
+			of_stdout = of_find_node_opts_by_path(NULL, name,
 							&of_stdout_options);
 	}
 
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index a59832ebbf..bd41ef503c 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -552,6 +552,17 @@ ofnode ofnode_path(const char *path)
 		return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
 }
 
+ofnode ofnode_path_root(oftree tree, const char *path)
+{
+	if (of_live_active())
+		return np_to_ofnode(of_find_node_opts_by_path(tree.np, path,
+							      NULL));
+	else if (*path != '/' && tree.fdt != gd->fdt_blob)
+		return ofnode_null();  /* Aliases only on control FDT */
+	else
+		return offset_to_ofnode(fdt_path_offset(tree.fdt, path));
+}
+
 const void *ofnode_read_chosen_prop(const char *propname, int *sizep)
 {
 	ofnode chosen_node;
diff --git a/include/dm/of_access.h b/include/dm/of_access.h
index ec6e6e2c7c..078f2ea06c 100644
--- a/include/dm/of_access.h
+++ b/include/dm/of_access.h
@@ -197,6 +197,11 @@ struct device_node *of_get_parent(const struct device_node *np);
 /**
  * of_find_node_opts_by_path() - Find a node matching a full OF path
  *
+ * Note that alias processing is only available on the control FDT (gd->of_root).
+ * For other trees it is skipped, so any attempt to obtain an alias will result
+ * in returning NULL.
+ *
+ * @root: Root node of the tree to use. If this is NULL, then gd->of_root is used
  * @path: Either the full path to match, or if the path does not start with
  *	'/', the name of a property of the /aliases node (an alias). In the
  *	case of an alias, the node matching the alias' value will be returned.
@@ -210,12 +215,13 @@ struct device_node *of_get_parent(const struct device_node *np);
  *
  * Return: a node pointer or NULL if not found
  */
-struct device_node *of_find_node_opts_by_path(const char *path,
+struct device_node *of_find_node_opts_by_path(struct device_node *root,
+					      const char *path,
 					      const char **opts);
 
 static inline struct device_node *of_find_node_by_path(const char *path)
 {
-	return of_find_node_opts_by_path(path, NULL);
+	return of_find_node_opts_by_path(NULL, path, NULL);
 }
 
 /**
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 5a5309d79a..d7ad5dccc1 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -176,6 +176,23 @@ static inline ofnode ofnode_root(void)
 	return node;
 }
 
+/**
+ * oftree_default() - Returns the default device tree (U-Boot's control FDT)
+ *
+ * Returns: reference to the control FDT
+ */
+static inline oftree oftree_default(void)
+{
+	oftree tree;
+
+	if (of_live_active())
+		tree.np = gd_of_root();
+	else
+		tree.fdt = (void *)gd->fdt_blob;
+
+	return tree;
+}
+
 /**
  * ofnode_name_eq() - Check if the node name is equivalent to a given name
  *                    ignoring the unit address
@@ -640,11 +657,22 @@ int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
 /**
  * ofnode_path() - find a node by full path
  *
+ * This uses the control FDT.
+ *
  * @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(const char *path);
 
+/**
+ * ofnode_path_root() - 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_read_chosen_prop() - get the value of a chosen property
  *
diff --git a/include/dm/ofnode_decl.h b/include/dm/ofnode_decl.h
index 7c9e43e4ad..266253d5e3 100644
--- a/include/dm/ofnode_decl.h
+++ b/include/dm/ofnode_decl.h
@@ -68,5 +68,18 @@ struct ofprop {
 	};
 };
 
+/**
+ * union oftree_union - reference to a tree of device tree nodes
+ *
+ * One or other of the members is used, depending on of_live_active()
+ *
+ * @np: Pointer to roott device node, used for live tree
+ * @fdt: Pointer to the flat device tree, used for flat tree
+ */
+typedef union oftree_union {
+	struct device_node *np;
+	void *fdt;
+} oftree;
+
 #endif
 
diff --git a/include/of_live.h b/include/of_live.h
index b2b9679ae8..f59d6af335 100644
--- a/include/of_live.h
+++ b/include/of_live.h
@@ -20,4 +20,20 @@ struct device_node;
  */
 int of_live_build(const void *fdt_blob, struct device_node **rootp);
 
+/**
+ * unflatten_device_tree() - create tree of device_nodes from flat blob
+ *
+ * Note that this allocates a single block of memory, pointed to by *mynodes.
+ * To free the tree, use free(*mynodes)
+ *
+ * unflattens a device-tree, creating the
+ * tree of struct device_node. It also fills the "name" and "type"
+ * pointers of the nodes so the normal device-tree walking functions
+ * can be used.
+ * @blob: The blob to expand
+ * @mynodes: The device_node tree created by the call
+ * Return: 0 if OK, -ve on error
+ */
+int unflatten_device_tree(const void *blob, struct device_node **mynodes);
+
 #endif
diff --git a/lib/of_live.c b/lib/of_live.c
index 2cb0dd9c07..30cae9ab88 100644
--- a/lib/of_live.c
+++ b/lib/of_live.c
@@ -248,19 +248,7 @@ static void *unflatten_dt_node(const void *blob, void *mem, int *poffset,
 	return mem;
 }
 
-/**
- * unflatten_device_tree() - create tree of device_nodes from flat blob
- *
- * unflattens a device-tree, creating the
- * tree of struct device_node. It also fills the "name" and "type"
- * pointers of the nodes so the normal device-tree walking functions
- * can be used.
- * @blob: The blob to expand
- * @mynodes: The device_node tree created by the call
- * Return: 0 if OK, -ve on error
- */
-static int unflatten_device_tree(const void *blob,
-				 struct device_node **mynodes)
+int unflatten_device_tree(const void *blob, struct device_node **mynodes)
 {
 	unsigned long size;
 	int start;
diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c
index 61ae1db62d..6a252f3f50 100644
--- a/test/dm/ofnode.c
+++ b/test/dm/ofnode.c
@@ -3,6 +3,7 @@
 #include <common.h>
 #include <dm.h>
 #include <log.h>
+#include <of_live.h>
 #include <dm/of_extra.h>
 #include <dm/test.h>
 #include <test/test.h>
@@ -469,3 +470,69 @@ static int dm_test_ofnode_get_phy(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_ofnode_get_phy, 0);
+
+/**
+ * make_ofnode_fdt() - Create an FDT for testing with ofnode
+ *
+ * The size is set to the minimum needed
+ *
+ * @uts: Test state
+ * @fdt: Place to write FDT
+ * @size: Maximum size of space for fdt
+ */
+static int make_ofnode_fdt(struct unit_test_state *uts, void *fdt, int size)
+{
+	ut_assertok(fdt_create(fdt, size));
+	ut_assertok(fdt_finish_reservemap(fdt));
+	ut_assert(fdt_begin_node(fdt, "") >= 0);
+
+	ut_assert(fdt_begin_node(fdt, "aliases") >= 0);
+	ut_assertok(fdt_property_string(fdt, "mmc0", "/new-mmc"));
+	ut_assertok(fdt_end_node(fdt));
+
+	ut_assert(fdt_begin_node(fdt, "new-mmc") >= 0);
+	ut_assertok(fdt_end_node(fdt));
+
+	ut_assertok(fdt_end_node(fdt));
+	ut_assertok(fdt_finish(fdt));
+
+	return 0;
+}
+
+static int dm_test_ofnode_root(struct unit_test_state *uts)
+{
+	struct device_node *root = NULL;
+	char fdt[256];
+	oftree tree;
+	ofnode node;
+
+	/* Check that aliases work on the control FDT */
+	node = ofnode_get_aliases_node("ethernet3");
+	ut_assert(ofnode_valid(node));
+	ut_asserteq_str("sbe5", ofnode_get_name(node));
+
+	ut_assertok(make_ofnode_fdt(uts, fdt, sizeof(fdt)));
+	if (of_live_active()) {
+		ut_assertok(unflatten_device_tree(fdt, &root));
+		tree.np = root;
+	} else {
+		tree.fdt = fdt;
+	}
+
+	/* Make sure they don't work on this new tree */
+	node = ofnode_path_root(tree, "mmc0");
+	ut_assert(!ofnode_valid(node));
+
+	/* It should appear in the new tree */
+	node = ofnode_path_root(tree, "/new-mmc");
+	ut_assert(ofnode_valid(node));
+
+	/* ...and not in the control FDT */
+	node = ofnode_path_root(oftree_default(), "/new-mmc");
+	ut_assert(!ofnode_valid(node));
+
+	free(root);
+
+	return 0;
+}
+DM_TEST(dm_test_ofnode_root, UT_TESTF_SCAN_FDT);