dm: core: Add a way to look up a phandle in an oftree
When we have multiple trees, the ofnode logic needs to be told which one
to use. Create a new function which takes an oftree argument, along with
a helper to obtain the FDT pointer from an oftree.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 48d4dec..012cb8c 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -410,6 +410,20 @@
return node;
}
+ofnode oftree_get_by_phandle(oftree tree, uint phandle)
+{
+ ofnode node;
+
+ if (of_live_active())
+ node = np_to_ofnode(of_find_node_by_phandle(tree.np, phandle));
+ else
+ node.of_offset =
+ fdt_node_offset_by_phandle(oftree_lookup_fdt(tree),
+ phandle);
+
+ return node;
+}
+
static fdt_addr_t __ofnode_get_addr_size_index(ofnode node, int index,
fdt_size_t *size, bool translate)
{