1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/nvmem/brcm,nvram.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom's NVRAM
8
9 description: |
10 Broadcom's NVRAM is a structure containing device specific environment
11 variables. It is used for storing device configuration, booting parameters
12 and calibration data.
13
14 NVRAM can be accessed on Broadcom BCM47xx MIPS and Northstar ARM Cortex-A9
15 devices usiong I/O mapped memory.
16
17 NVRAM variables can be defined as NVMEM device subnodes.
18
19 maintainers:
20 - Rafał Miłecki <rafal@milecki.pl>
21
22 allOf:
23 - $ref: nvmem.yaml#
24
25 properties:
26 compatible:
27 const: brcm,nvram
28
29 reg:
30 maxItems: 1
31
32 board_id:
33 type: object
34 description: Board identification name
35
36 et0macaddr:
37 type: object
38 description: First Ethernet interface's MAC address
39 properties:
40 "#nvmem-cell-cells":
41 description: The first argument is a MAC address offset.
42 const: 1
43 additionalProperties: false
44
45 et1macaddr:
46 type: object
47 description: Second Ethernet interface's MAC address
48 properties:
49 "#nvmem-cell-cells":
50 description: The first argument is a MAC address offset.
51 const: 1
52 additionalProperties: false
53
54 et2macaddr:
55 type: object
56 description: Third Ethernet interface's MAC address
57 properties:
58 "#nvmem-cell-cells":
59 description: The first argument is a MAC address offset.
60 const: 1
61 additionalProperties: false
62
63 unevaluatedProperties: false
64
65 examples:
66 - |
67 nvram@1eff0000 {
68 compatible = "brcm,nvram";
69 reg = <0x1eff0000 0x10000>;
70
71 mac: et0macaddr {
72 };
73 };
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