[PATCH 1/5] dt/bindings: Add bindings for FWU Metadata mtd storage

[jassisinghbrar at gmail.com]

From: Sughosh Ganu <sughosh.ganu at linaro.org>

Add bindings needed for accessing the FWU metadata regions.
These include the compatible string which point to the access
method, the actual device which stores the FWU metadata and
the offsets for both metadata regions.

The current patch adds basic bindings needed for accessing the
metadata structure on non-GPT mtd regions.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu at linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh at linaro.org>
---
 .../firmware/fwu-mdata-mtd.yaml               | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 doc/device-tree-bindings/firmware/fwu-mdata-mtd.yaml

diff --git a/doc/device-tree-bindings/firmware/fwu-mdata-mtd.yaml b/doc/device-tree-bindings/firmware/fwu-mdata-mtd.yaml
new file mode 100644
index 0000000000..4f5404f999
--- /dev/null
+++ b/doc/device-tree-bindings/firmware/fwu-mdata-mtd.yaml
@@ -0,0 +1,38 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/u-boot,fwu-mdata-sf.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: FWU metadata on MTD device without GPT
+
+maintainers:
+ - Masami Hiramatsu <masami.hiramatsu at linaro.org>
+
+properties:
+  compatible:
+    items:
+      - const: u-boot,fwu-mdata-mtd
+
+  fwu-mdata-store:
+    maxItems: 1
+    description: Phandle of the MTD device which contains the FWU medatata.
+
+  mdata-offsets:
+    minItems: 2
+    description: Offsets of the primary and secondary FWU metadata in the NOR flash.
+
+required:
+  - compatible
+  - fwu-mdata-store
+  - mdata-offsets
+
+additionalProperties: false
+
+examples:
+  - |
+    fwu-mdata {
+        compatible = "u-boot,fwu-mdata-mtd";
+        fwu-mdata-store = <&spi-flash>;
+        mdata-offsets = <0x500000 0x530000>;
+    };
-- 
2.25.1