dt/bindings: Add bindings for GPT based FWU Metadata storage device

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

The current patch adds basic bindings needed for accessing the
metadata structure on GPT partitioned block devices.

Signed-off-by: Sughosh Ganu <[email protected]>
Reviewed-by: Heinrich Schuchardt <[email protected]>
Acked-by: Etienne Carriere <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>

1 files changed, 32 insertions, 0 deletions

diff --git a/doc/device-tree-bindings/firmware/fwu-mdata-gpt.yaml b/doc/device-tree-bindings/firmware/fwu-mdata-gpt.yaml
new file mode 100644
index 00000000000..0735191ff15
--- /dev/null
+++ b/doc/device-tree-bindings/firmware/fwu-mdata-gpt.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/fwu-mdata-gpt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: FWU metadata on device with GPT partitioned layout
+
+maintainers:
+ - Sughosh Ganu <[email protected]>
+
+properties:
+  compatible:
+    items:
+      - const: u-boot,fwu-mdata-gpt
+
+  fwu-mdata-store:
+    maxItems: 1
+    description: Phandle of the device which contains the FWU medatata partition.
+
+required:
+  - compatible
+  - fwu-mdata-store
+
+additionalProperties: false
+
+examples:
+  - |
+    fwu-mdata {
+        compatible = "u-boot,fwu-mdata-gpt";
+        fwu-mdata-store = <&sdmmc1>;
+    };