xref: /linux/Documentation/devicetree/bindings/i2c/silabs,cp2112.yaml (revision 99e447220b938dfed6488db95a2930b57ea849ba) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/silabs,cp2112.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: CP2112 HID USB to SMBus/I2C Bridge
8
9maintainers:
10  - Danny Kaehn <danny.kaehn@plexus.com>
11
12description:
13  The CP2112 is a USB HID device which includes an integrated I2C controller
14  and 8 GPIO pins. Its GPIO pins can each be configured as inputs, open-drain
15  outputs, or push-pull outputs.
16
17properties:
18  compatible:
19    const: usb10c4,ea90
20
21  reg:
22    maxItems: 1
23    description: The USB port number
24
25  interrupt-controller: true
26  "#interrupt-cells":
27    const: 2
28
29  gpio-controller: true
30  "#gpio-cells":
31    const: 2
32
33  gpio-line-names:
34    minItems: 1
35    maxItems: 8
36
37  i2c:
38    description: The SMBus/I2C controller node for the CP2112
39    $ref: /schemas/i2c/i2c-controller.yaml#
40    unevaluatedProperties: false
41
42    properties:
43      clock-frequency:
44        minimum: 10000
45        default: 100000
46        maximum: 400000
47
48patternProperties:
49  "-hog(-[0-9]+)?$":
50    type: object
51
52    required:
53      - gpio-hog
54
55required:
56  - compatible
57  - reg
58
59additionalProperties: false
60
61examples:
62  - |
63    #include <dt-bindings/interrupt-controller/irq.h>
64    #include <dt-bindings/gpio/gpio.h>
65
66    usb {
67        #address-cells = <1>;
68        #size-cells = <0>;
69
70        cp2112: device@1 {
71            compatible = "usb10c4,ea90";
72            reg = <1>;
73
74            gpio-controller;
75            interrupt-controller;
76            #interrupt-cells = <2>;
77            #gpio-cells = <2>;
78            gpio-line-names = "CP2112_SDA", "CP2112_SCL", "TEST2",
79                              "TEST3","TEST4", "TEST5", "TEST6";
80
81            fan-rst-hog {
82                gpio-hog;
83                gpios = <7 GPIO_ACTIVE_HIGH>;
84                output-high;
85                line-name = "FAN_RST";
86            };
87
88            i2c {
89                #address-cells = <1>;
90                #size-cells = <0>;
91                sda-gpios = <&cp2112 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
92                scl-gpios = <&cp2112 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
93
94                temp@48 {
95                    compatible = "national,lm75";
96                    reg = <0x48>;
97                };
98            };
99        };
100    };
101