cypress,cy8c95x0.yaml

  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    minItems: 1
 49    maxItems: 60
 50
 51  vdd-supply:
 52    description:
 53      Optional power supply.
 54
 55  reset-gpios:
 56    description: GPIO connected to the XRES pin
 57    maxItems: 1
 58
 59patternProperties:
 60  '-pins$':
 61    type: object
 62    description:
 63      Pinctrl node's client devices use subnodes for desired pin configuration.
 64      Client device subnodes use below standard properties.
 65    $ref: pincfg-node.yaml#
 66
 67    properties:
 68      pins:
 69        description:
 70          List of gpio pins affected by the properties specified in this
 71          subnode.
 72        items:
 73          pattern: '^gp([0-7][0-7])$'
 74        minItems: 1
 75        maxItems: 60
 76
 77      function:
 78        description:
 79          Specify the alternative function to be configured for the specified
 80          pins.
 81        enum: [ gpio, pwm ]
 82
 83      bias-pull-down: true
 84
 85      bias-pull-up: true
 86
 87      bias-disable: true
 88
 89      input-enable: true
 90
 91      output-high: true
 92
 93      output-low: true
 94
 95      drive-push-pull: true
 96
 97      drive-open-drain: true
 98
 99      drive-open-source: true
100
101    required:
102      - pins
103      - function
104
105    additionalProperties: false
106
107required:
108  - compatible
109  - reg
110  - interrupts
111  - interrupt-controller
112  - '#interrupt-cells'
113  - gpio-controller
114  - '#gpio-cells'
115
116additionalProperties: false
117
118allOf:
119  - $ref: pinctrl.yaml#
120
121examples:
122  - |
123    #include <dt-bindings/interrupt-controller/arm-gic.h>
124    #include <dt-bindings/interrupt-controller/irq.h>
125
126    i2c {
127      #address-cells = <1>;
128      #size-cells = <0>;
129
130      pinctrl@20 {
131        compatible = "cypress,cy8c9520";
132        reg = <0x20>;
133        gpio-controller;
134        #gpio-cells = <2>;
135        #interrupt-cells = <2>;
136        interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
137        interrupt-controller;
138        vdd-supply = <&p3v3>;
139        gpio-reserved-ranges = <1 2>, <6 1>, <10 1>, <15 1>;
140
141        pinctrl-0 = <&U62160_pins>, <&U62160_ipins>;
142        pinctrl-names = "default";
143
144        U62160_pins: cfg-pins {
145          pins = "gp03", "gp16", "gp20", "gp50", "gp51";
146          function = "gpio";
147          input-enable;
148          bias-pull-up;
149        };
150
151        U62160_ipins: icfg-pins {
152          pins = "gp04", "gp17", "gp21", "gp52", "gp53";
153          function = "gpio";
154          input-enable;
155          bias-pull-up;
156        };
157      };
158    };