dt-bindings: nvmem: move deprecated cells binding to its own file

Support for old NVMEM fixed cells was deprecated in favour of
"fixed-layout". It's still part of the nvmem.yaml though and may be
unknowingly used by new bindings added without much of analyze.

To make it more difficult to accidentally support old syntax move its
binding to separated file with "deprecated" in its name.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20231020105545.216052-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Rafał Miłecki

Documentation/devicetree/bindings/mtd/mtd.yaml

@@ -43,7 +43,12 @@ patternProperties:
     deprecated: true
 
   "^otp(-[0-9]+)?$":
-    $ref: ../nvmem/nvmem.yaml#
+    type: object
+
+    allOf:
+      - $ref: ../nvmem/nvmem.yaml#
+      - $ref: ../nvmem/nvmem-deprecated-cells.yaml#
+
     unevaluatedProperties: false
 
     description: |

Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml

@@ -19,6 +19,7 @@ maintainers:
 allOf:
   - $ref: /schemas/mtd/partitions/partition.yaml#
   - $ref: /schemas/nvmem/nvmem.yaml#
+  - $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/amlogic,meson-gxbb-efuse.yaml

@@ -11,6 +11,7 @@ maintainers:
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/amlogic,meson6-efuse.yaml

@@ -12,6 +12,7 @@ maintainers:
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/apple,efuses.yaml

@@ -16,6 +16,7 @@ maintainers:
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml

@@ -16,6 +16,7 @@ description: |
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml

@@ -16,6 +16,7 @@ maintainers:
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   $nodename:

Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml

@@ -16,6 +16,7 @@ description: |
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml

@@ -11,6 +11,7 @@ maintainers:
 
 allOf:
   - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/nvmem/nvmem-deprecated-cells.yaml

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/nvmem-deprecated-cells.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVMEM old syntax for fixed cells
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  Before introducing NVMEM layouts all NVMEM (fixed) cells were defined
+  as direct device subnodes. That syntax was replaced by "fixed-layout"
+  and is deprecated now. No new bindings should use it.
+
+patternProperties:
+  "@[0-9a-f]+(,[0-7])?$":
+    type: object
+    allOf:
+      - $ref: layouts/fixed-cell.yaml
+      - properties:
+          compatible: false
+    deprecated: true
+
+additionalProperties: true
+
+...