fdt_support: Add fdt_delete_disabled_nodes() and use in Turris MOX

Move Turris MOX specific remove_disabled_nodes() to fdt_support with
name fdt_delete_disabled_nodes(), so that others can potentially use it.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>

1 files changed, 23 insertions, 0 deletions

diff --git a/common/fdt_support.c b/common/fdt_support.c
index c2e16727e13..b2ba0825df3 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -695,6 +695,29 @@ int fdt_shrink_to_minimum(void *blob, uint extrasize)
 	return actualsize;
 }
 
+/**
+ * fdt_delete_disabled_nodes: Delete all nodes with status == "disabled"
+ *
+ * @blob: ptr to device tree
+ */
+int fdt_delete_disabled_nodes(void *blob)
+{
+	while (1) {
+		int ret, offset;
+
+		offset = fdt_node_offset_by_prop_value(blob, -1, "status",
+						       "disabled", 9);
+		if (offset < 0)
+			break;
+
+		ret = fdt_del_node(blob, offset);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
 #ifdef CONFIG_PCI
 #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4