[PATCH v4 2/3] dt-bindings: mtd: binman-partition: Add binman compatibles

[Simon Glass]

Add two compatible for binman entries, as a starting point for the
schema.

Note that, after discussion on v2, we decided to keep the existing
meaning of label so as not to require changes to existing userspace
software when moving to use binman nodes to specify the firmware
layout.

Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
---

Changes in v4:
- Correct selection of multiple compatible strings

Changes in v3:
- Drop fixed-partitions from the example
- Use compatible instead of label

Changes in v2:
- Use plain partition@xxx for the node name

 .../mtd/partitions/binman-partition.yaml      | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml

diff --git a/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml b/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml
new file mode 100644
index 000000000000..35a320359ec1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/binman-partition.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2023 Google LLC
+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/binman-partition.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Binman partition
+
+maintainers:
+  - Simon Glass <sjg@xxxxxxxxxxxx>
+
+select: false
+
+description: |
+  This corresponds to a binman 'entry'. It is a single partition which holds
+  data of a defined type.
+
+allOf:
+  - $ref: /schemas/mtd/partitions/partition.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: binman,entry     # generic binman entry
+      - items:
+          - const: u-boot       # u-boot.bin from U-Boot project
+          - const: atf-bl31     # bl31.bin or bl31.elf from TF-A project
+
+additionalProperties: false
+
+examples:
+  - |
+    partitions {
+        compatible = "binman";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        partition@100000 {
+            compatible = "u-boot";
+            reg = <0x100000 0xf00000>;
+        };
+
+        partition@200000 {
+            compatible = "atf-bl31";
+            reg = <0x200000 0x100000>;
+        };
+    };
-- 
2.42.0.609.gbb76f46606-goog