openwrt/target/linux/generic/backport-6.6/402-v6.9-dt-bindings-mtd-ubi-volume-allow-UBI-volumes-to-prov.patch

From 95b113222b5164ac0887eb5c514ff3970a0136f0 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Tue, 19 Dec 2023 02:32:11 +0000
Subject: [PATCH 2/8] 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@makrotopia.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
 .../devicetree/bindings/mtd/partitions/linux,ubi.yaml  | 10 ++++++++++
 .../devicetree/bindings/mtd/partitions/ubi-volume.yaml |  5 +++++
 2 files changed, 15 insertions(+)

--- 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>;
+                        };
+                    };
                 };
             };
         };
--- 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