feat(fdt-wrappers): add function to find or add a sudnode
This change adds a new utility function - `fdtw_find_or_add_subnode`
to find a subnode. If the subnode is not present, the function adds
it in the flattened device tree.
Signed-off-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Change-Id: Idf3ceddc57761ac015763d4a8b004877bcad766a
diff --git a/include/common/fdt_wrappers.h b/include/common/fdt_wrappers.h
index 9c7180c..2929fc2 100644
--- a/include/common/fdt_wrappers.h
+++ b/include/common/fdt_wrappers.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2022, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -44,6 +44,8 @@
int fdtw_for_each_cpu(const void *fdt,
int (*callback)(const void *dtb, int node, uintptr_t mpidr));
+int fdtw_find_or_add_subnode(void *fdt, int parentoffset, const char *name);
+
static inline uint32_t fdt_blob_size(const void *dtb)
{
const uint32_t *dtb_header = dtb;