linux-kernel - [PATCH v5 2/7] dt-bindings: mtd: ubi-volume: allow UBI volumes to provide NVMEM

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Message-ID: <de0bd3647ed2560074aa3528716c203b8939fe1d.1702770711.git.daniel@makrotopia.org>
Date: Sun, 17 Dec 2023 00:09:41 +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 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 c17d0caf07d97..098da3af13a26 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
-- 
2.43.0