xref: /linux/Documentation/devicetree/bindings/pinctrl/cypress,cy8c95x0.yaml (revision 78964fcac47fc1525ecb4c37cd5fbc873c28320b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/cypress,cy8c95x0.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Cypress CY8C95X0 I2C GPIO expander
8
9maintainers:
10  - Patrick Rudolph <patrick.rudolph@9elements.com>
11
12description: |
13  This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
14  Pin function configuration is performed on a per-pin basis.
15
16properties:
17  compatible:
18    enum:
19      - cypress,cy8c9520
20      - cypress,cy8c9540
21      - cypress,cy8c9560
22
23  reg:
24    maxItems: 1
25
26  gpio-controller: true
27
28  '#gpio-cells':
29    description:
30      The first cell is the GPIO number and the second cell specifies GPIO
31      flags, as defined in <dt-bindings/gpio/gpio.h>.
32    const: 2
33
34  interrupts:
35    maxItems: 1
36
37  interrupt-controller: true
38
39  '#interrupt-cells':
40    const: 2
41
42  gpio-line-names: true
43
44  gpio-ranges:
45    maxItems: 1
46
47  gpio-reserved-ranges:
48    maxItems: 1
49
50  vdd-supply:
51    description:
52      Optional power supply.
53
54  reset-gpios:
55    description: GPIO connected to the XRES pin
56    maxItems: 1
57
58patternProperties:
59  '-pins$':
60    type: object
61    description:
62      Pinctrl node's client devices use subnodes for desired pin configuration.
63      Client device subnodes use below standard properties.
64    $ref: pincfg-node.yaml#
65
66    properties:
67      pins:
68        description:
69          List of gpio pins affected by the properties specified in this
70          subnode.
71        items:
72          pattern: '^gp([0-7][0-7])$'
73        minItems: 1
74        maxItems: 60
75
76      function:
77        description:
78          Specify the alternative function to be configured for the specified
79          pins.
80        enum: [ gpio, pwm ]
81
82      bias-pull-down: true
83
84      bias-pull-up: true
85
86      bias-disable: true
87
88      output-high: true
89
90      output-low: true
91
92      drive-push-pull: true
93
94      drive-open-drain: true
95
96      drive-open-source: true
97
98    required:
99      - pins
100      - function
101
102    additionalProperties: false
103
104required:
105  - compatible
106  - reg
107  - interrupts
108  - interrupt-controller
109  - '#interrupt-cells'
110  - gpio-controller
111  - '#gpio-cells'
112
113additionalProperties: false
114
115allOf:
116  - $ref: pinctrl.yaml#
117
118examples:
119  - |
120    #include <dt-bindings/interrupt-controller/arm-gic.h>
121    #include <dt-bindings/interrupt-controller/irq.h>
122
123    i2c {
124      #address-cells = <1>;
125      #size-cells = <0>;
126
127      pinctrl@20 {
128        compatible = "cypress,cy8c9520";
129        reg = <0x20>;
130        gpio-controller;
131        #gpio-cells = <2>;
132        #interrupt-cells = <2>;
133        interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
134        interrupt-controller;
135        vdd-supply = <&p3v3>;
136        gpio-reserved-ranges = <5 1>;
137      };
138    };
139