dm: core: implement ofnode/tree_parse_phandle() helper
Implement ofnode/tree_parse_phandle() helper as an equivalent of
of_parse_phandle to handle simple single value phandle.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index b9cc941..dc6ac06 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -879,6 +879,64 @@
return count;
}
+ofnode ofnode_parse_phandle(ofnode node, const char *phandle_name,
+ int index)
+{
+ ofnode phandle;
+
+ if (ofnode_is_np(node)) {
+ struct device_node *np;
+
+ np = of_parse_phandle(ofnode_to_np(node), phandle_name,
+ index);
+ if (!np)
+ return ofnode_null();
+
+ phandle = np_to_ofnode(np);
+ } else {
+ struct fdtdec_phandle_args args;
+
+ if (fdtdec_parse_phandle_with_args(ofnode_to_fdt(node),
+ ofnode_to_offset(node),
+ phandle_name, NULL,
+ 0, index, &args))
+ return ofnode_null();
+
+ phandle = offset_to_ofnode(args.node);
+ }
+
+ return phandle;
+}
+
+ofnode oftree_parse_phandle(oftree tree, ofnode node, const char *phandle_name,
+ int index)
+{
+ ofnode phandle;
+
+ if (ofnode_is_np(node)) {
+ struct device_node *np;
+
+ np = of_root_parse_phandle(tree.np, ofnode_to_np(node),
+ phandle_name, index);
+ if (!np)
+ return ofnode_null();
+
+ phandle = np_to_ofnode(np);
+ } else {
+ struct fdtdec_phandle_args args;
+
+ if (fdtdec_parse_phandle_with_args(tree.fdt,
+ ofnode_to_offset(node),
+ phandle_name, NULL,
+ 0, index, &args))
+ return ofnode_null();
+
+ phandle = noffset_to_ofnode(node, args.node);
+ }
+
+ return phandle;
+}
+
static void ofnode_from_fdtdec_phandle_args(ofnode node, struct fdtdec_phandle_args *in,
struct ofnode_phandle_args *out)
{