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Message-ID: <a9c12b8cc183b103af421a4a350ae6ef1ec173c8.1702770711.git.daniel@makrotopia.org>
Date: Sun, 17 Dec 2023 00:09:30 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Daniel Golle <daniel@...rotopia.org>,
	Rafał Miłecki <rafal@...ecki.pl>,
	linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 1/7] dt-bindings: mtd: add basic bindings for UBI

Add basic bindings for UBI devices and volumes.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../bindings/mtd/partitions/linux,ubi.yaml    | 65 +++++++++++++++++++
 .../bindings/mtd/partitions/ubi-volume.yaml   | 35 ++++++++++
 2 files changed, 100 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml

diff --git a/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml b/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
new file mode 100644
index 0000000000000..7084a1945b310
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/linux,ubi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unsorted Block Images
+
+description: |
+  UBI ("Unsorted Block Images") is a volume management system for raw
+  flash devices which manages multiple logical volumes on a single
+  physical flash device and spreads the I/O load (i.e wear-leveling)
+  across the whole flash chip.
+
+maintainers:
+  - Daniel Golle <daniel@...rotopia.org>
+
+allOf:
+  - $ref: partition.yaml#
+
+properties:
+  compatible:
+    const: linux,ubi
+
+  volumes:
+    type: object
+    description: UBI Volumes
+
+    patternProperties:
+      "^ubi-volume-.*$":
+        $ref: /schemas/mtd/partitions/ubi-volume.yaml#
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    partitions {
+        compatible = "fixed-partitions";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        partition@0 {
+            reg = <0x0 0x100000>;
+            label = "bootloader";
+            read-only;
+        };
+
+        partition@...000 {
+            reg = <0x100000 0x1ff00000>;
+            label = "ubi";
+            compatible = "linux,ubi";
+
+            volumes {
+                ubi-volume-caldata {
+                    volid = <2>;
+                    volname = "rf";
+                };
+            };
+        };
+    };
diff --git a/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml b/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml
new file mode 100644
index 0000000000000..c17d0caf07d97
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/ubi-volume.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: UBI volume
+
+description: |
+  This binding describes a single UBI volume. Volumes can be matches either
+  by their ID or their name, or both.
+
+maintainers:
+  - Daniel Golle <daniel@...rotopia.org>
+
+properties:
+  volid:
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    description:
+      Match UBI volume ID
+
+  volname:
+    $ref: "/schemas/types.yaml#/definitions/string"
+    description:
+      Match UBI volume ID
+
+anyOf:
+  - required:
+    - volid
+
+  - required:
+    - volname
+
+# This is a generic file other binding inherit from and extend
+additionalProperties: true
-- 
2.43.0

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