of: of_path: find device via partuuid

When a node is compatible to a fixed-partitions, support searching the
corresponding device via the partuuid, if it specified in the device tree.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

1 files changed, 21 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/mtd/partition.txt b/Documentation/devicetree/bindings/mtd/partition.txt
new file mode 100644
index 0000000000..ab21ff25bb
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partition.txt
@@ -0,0 +1,21 @@
+Representing flash partitions in devicetree
+
+In addition to the upstream binding, another property is added:
+
+Optional properties:
+- partuuid : The partition UUID for this partition.
+
+
+Examples:
+
+flash@0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		state_part: state {
+			partuuid = "16367da7-c518-499f-9aad-e1f366692365";
+		};
+	};
+};