[U-Boot] [PATCH] core: add ofnode_get_by_phandle() api

[Kever Yang]

We need to get ofnode from a phandle, add interface to support
both live dt and fdt.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

 drivers/core/ofnode.c | 13 +++++++++++++
 include/dm/ofnode.h   |  8 ++++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 0fc8bd4..59c8ff3 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -177,6 +177,19 @@ const char *ofnode_get_name(ofnode node)
 	return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
 }
 
+ofnode ofnode_get_by_phandle(uint phandle)
+{
+	ofnode node;
+
+	if (of_live_active())
+		node = np_to_ofnode(of_find_node_by_phandle(phandle));
+	else
+		node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob,
+							    phandle);
+
+	return node;
+}
+
 int ofnode_read_size(ofnode node, const char *propname)
 {
 	int len;
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 8b9932a..b1681e2 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -310,6 +310,14 @@ ofnode ofnode_next_subnode(ofnode node);
 const char *ofnode_get_name(ofnode node);
 
 /**
+ * ofnode_get_by_phandle() - get ofnode from phandle
+ *
+ * @phandle:	phandle to look up
+ * @return ofnode reference to the phandle
+ */
+ofnode ofnode_get_by_phandle(uint phandle);
+
+/**
  * ofnode_read_size() - read the size of a property
  *
  * @node: node to check
-- 
1.9.1