xref: /linux/Documentation/devicetree/bindings/nvmem/rmem.yaml (revision 64b14a184e83eb62ea0615e31a409956049d40e7) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/nvmem/rmem.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Reserved Memory Based nvmem Device
8
9maintainers:
10  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
11
12allOf:
13  - $ref: "nvmem.yaml#"
14
15properties:
16  compatible:
17    items:
18      - enum:
19          - raspberrypi,bootloader-config
20      - const: nvmem-rmem
21
22  reg:
23    maxItems: 1
24
25  no-map:
26    $ref: /schemas/types.yaml#/definitions/flag
27    description:
28      Avoid creating a virtual mapping of the region as part of the OS'
29      standard mapping of system memory.
30
31required:
32  - compatible
33  - no-map
34
35unevaluatedProperties: false
36
37examples:
38  - |
39        reserved-memory {
40                #address-cells = <1>;
41                #size-cells = <1>;
42
43                blconfig: nvram@10000000 {
44                        compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
45                        #address-cells = <1>;
46                        #size-cells = <1>;
47                        reg = <0x10000000 0x1000>;
48                        no-map;
49                };
50        };
51
52...
53