1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/nvmem/apple,efuses.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Apple SoC eFuse-based NVMEM
8
9 description: |
10 Apple SoCs such as the M1 contain factory-programmed eFuses used to e.g. store
11 calibration data for the PCIe and the Type-C PHY or unique chip identifiers
12 such as the ECID.
13
14 maintainers:
15 - Sven Peter <sven@svenpeter.dev>
16
17 allOf:
18 - $ref: nvmem.yaml#
19 - $ref: nvmem-deprecated-cells.yaml#
20
21 properties:
22 compatible:
23 items:
24 - enum:
25 - apple,t8103-efuses
26 - apple,t6000-efuses
27 - const: apple,efuses
28
29 reg:
30 maxItems: 1
31
32 required:
33 - compatible
34 - reg
35
36 unevaluatedProperties: false
37
38 examples:
39 - |
40 efuse@3d2bc000 {
41 compatible = "apple,t8103-efuses", "apple,efuses";
42 reg = <0x3d2bc000 0x1000>;
43 #address-cells = <1>;
44 #size-cells = <1>;
45
46 ecid: efuse@500 {
47 reg = <0x500 0x8>;
48 };
49 };
50
51 ...
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