xref: /freebsd/sys/contrib/device-tree/Bindings/mfd/delta,tn48m-cpld.yaml (revision 7d0873ebb83b19ba1e8a89e679470d885efe12e3) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mfd/delta,tn48m-cpld.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Delta Networks TN48M CPLD controller
8
9maintainers:
10  - Robert Marko <robert.marko@sartura.hr>
11
12description: |
13  Lattice CPLD onboard the TN48M switches is used for system
14  management.
15
16  It provides information about the hardware model, revision,
17  PSU status etc.
18
19  It is also being used as a GPIO expander and reset controller
20  for the switch MAC-s and other peripherals.
21
22properties:
23  compatible:
24    const: delta,tn48m-cpld
25
26  reg:
27    description:
28      I2C device address.
29    maxItems: 1
30
31  "#address-cells":
32    const: 1
33
34  "#size-cells":
35    const: 0
36
37required:
38  - compatible
39  - reg
40  - "#address-cells"
41  - "#size-cells"
42
43patternProperties:
44  "^gpio(@[0-9a-f]+)?$":
45    $ref: /schemas/gpio/delta,tn48m-gpio.yaml
46
47  "^reset-controller?$":
48    $ref: /schemas/reset/delta,tn48m-reset.yaml
49
50additionalProperties: false
51
52examples:
53  - |
54    i2c {
55        #address-cells = <1>;
56        #size-cells = <0>;
57
58        cpld@41 {
59            compatible = "delta,tn48m-cpld";
60            reg = <0x41>;
61            #address-cells = <1>;
62            #size-cells = <0>;
63
64            gpio@31 {
65                compatible = "delta,tn48m-gpo";
66                reg = <0x31>;
67                gpio-controller;
68                #gpio-cells = <2>;
69            };
70
71            gpio@3a {
72                compatible = "delta,tn48m-gpi";
73                reg = <0x3a>;
74                gpio-controller;
75                #gpio-cells = <2>;
76            };
77
78            gpio@40 {
79                compatible = "delta,tn48m-gpi";
80                reg = <0x40>;
81                gpio-controller;
82                #gpio-cells = <2>;
83            };
84
85            reset-controller {
86              compatible = "delta,tn48m-reset";
87              #reset-cells = <1>;
88            };
89        };
90    };
91