xref: /linux/Documentation/devicetree/bindings/mfd/apple,smc.yaml (revision fcb117e0758d1462128a50c5788555e03b48833b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mfd/apple,smc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Apple Mac System Management Controller
8
9maintainers:
10  - Sven Peter <sven@kernel.org>
11
12description:
13  Apple Mac System Management Controller implements various functions
14  such as GPIO, RTC, power, reboot.
15
16properties:
17  compatible:
18    items:
19      - enum:
20          - apple,t6000-smc
21          - apple,t8103-smc
22          - apple,t8112-smc
23      - const: apple,smc
24
25  reg:
26    items:
27      - description: SMC area
28      - description: SRAM area
29
30  reg-names:
31    items:
32      - const: smc
33      - const: sram
34
35  mboxes:
36    maxItems: 1
37
38  gpio:
39    $ref: /schemas/gpio/apple,smc-gpio.yaml
40
41  reboot:
42    $ref: /schemas/power/reset/apple,smc-reboot.yaml
43
44additionalProperties: false
45
46required:
47  - compatible
48  - reg
49  - reg-names
50  - mboxes
51
52examples:
53  - |
54    soc {
55      #address-cells = <2>;
56      #size-cells = <2>;
57
58      smc@23e400000 {
59        compatible = "apple,t8103-smc", "apple,smc";
60        reg = <0x2 0x3e400000 0x0 0x4000>,
61               <0x2 0x3fe00000 0x0 0x100000>;
62        reg-names = "smc", "sram";
63        mboxes = <&smc_mbox>;
64
65        smc_gpio: gpio {
66          compatible = "apple,smc-gpio";
67          gpio-controller;
68          #gpio-cells = <2>;
69        };
70
71        reboot {
72          compatible = "apple,smc-reboot";
73          nvmem-cells = <&shutdown_flag>, <&boot_stage>,
74                        <&boot_error_count>, <&panic_count>;
75          nvmem-cell-names = "shutdown_flag", "boot_stage",
76                             "boot_error_count", "panic_count";
77        };
78      };
79    };
80