1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/cypress,cy8c95x0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cypress CY8C95X0 I2C GPIO expander
maintainers:
- Patrick Rudolph <patrick.rudolph@9elements.com>
description: |
This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
Pin function configuration is performed on a per-pin basis.
properties:
compatible:
enum:
- cypress,cy8c9520
- cypress,cy8c9540
- cypress,cy8c9560
reg:
maxItems: 1
gpio-controller: true
'#gpio-cells':
description:
The first cell is the GPIO number and the second cell specifies GPIO
flags, as defined in <dt-bindings/gpio/gpio.h>.
const: 2
interrupts:
maxItems: 1
interrupt-controller: true
'#interrupt-cells':
const: 2
gpio-line-names: true
gpio-ranges:
maxItems: 1
gpio-reserved-ranges:
minItems: 1
maxItems: 60
vdd-supply:
description:
Optional power supply.
reset-gpios:
description: GPIO connected to the XRES pin
maxItems: 1
patternProperties:
'-pins$':
type: object
description:
Pinctrl node's client devices use subnodes for desired pin configuration.
Client device subnodes use below standard properties.
$ref: pincfg-node.yaml#
properties:
pins:
description:
List of gpio pins affected by the properties specified in this
subnode.
items:
pattern: '^gp([0-7][0-7])$'
minItems: 1
maxItems: 60
function:
description:
Specify the alternative function to be configured for the specified
pins.
enum: [ gpio, pwm ]
bias-pull-down: true
bias-pull-up: true
bias-disable: true
input-enable: true
output-high: true
output-low: true
drive-push-pull: true
drive-open-drain: true
drive-open-source: true
required:
- pins
- function
additionalProperties: false
required:
- compatible
- reg
- interrupts
- interrupt-controller
- '#interrupt-cells'
- gpio-controller
- '#gpio-cells'
additionalProperties: false
allOf:
- $ref: pinctrl.yaml#
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
pinctrl@20 {
compatible = "cypress,cy8c9520";
reg = <0x20>;
gpio-controller;
#gpio-cells = <2>;
#interrupt-cells = <2>;
interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
vdd-supply = <&p3v3>;
gpio-reserved-ranges = <1 2>, <6 1>, <10 1>, <15 1>;
pinctrl-0 = <&U62160_pins>, <&U62160_ipins>;
pinctrl-names = "default";
U62160_pins: cfg-pins {
pins = "gp03", "gp16", "gp20", "gp50", "gp51";
function = "gpio";
input-enable;
bias-pull-up;
};
U62160_ipins: icfg-pins {
pins = "gp04", "gp17", "gp21", "gp52", "gp53";
function = "gpio";
input-enable;
bias-pull-up;
};
};
};
|
