linux-kernel - [PATCH v8 2/7] dt-bindings: mtd: ubi-volume: allow UBI volumes to provide NVMEM

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Message-ID: <6b45ddaa344cc3958fa25f2e8f15a73c006f58fa.1708906456.git.daniel@makrotopia.org>
Date: Mon, 26 Feb 2024 00:22:56 +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@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Daniel Golle <daniel@...rotopia.org>, linux-mtd@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v8 2/7] dt-bindings: mtd: ubi-volume: allow UBI volumes to
 provide NVMEM

UBI volumes may be used to contain NVMEM bits, typically device MAC
addresses or wireless radio calibration data.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/mtd/partitions/linux,ubi.yaml  | 10 ++++++++++
 .../devicetree/bindings/mtd/partitions/ubi-volume.yaml |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml b/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
index 7084a1945b310..27e1ac1f252e4 100644
--- a/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
+++ b/Documentation/devicetree/bindings/mtd/partitions/linux,ubi.yaml
@@ -59,6 +59,16 @@ examples:
                 ubi-volume-caldata {
                     volid = <2>;
                     volname = "rf";
+
+                    nvmem-layout {
+                        compatible = "fixed-layout";
+                        #address-cells = <1>;
+                        #size-cells = <1>;
+
+                        eeprom@0 {
+                            reg = <0x0 0x1000>;
+                        };
+                    };
                 };
             };
         };
diff --git a/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml b/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml
index 1e3f04dedc01d..19736b26056b2 100644
--- a/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml
+++ b/Documentation/devicetree/bindings/mtd/partitions/ubi-volume.yaml
@@ -24,6 +24,11 @@ properties:
     description:
       Match UBI volume ID
 
+  nvmem-layout:
+    $ref: /schemas/nvmem/layouts/nvmem-layout.yaml#
+    description:
+      This container may reference an NVMEM layout parser.
+
 anyOf:
   - required:
       - volid
-- 
2.44.0