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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/cypress,cy8c95x0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cypress CY8C95X0 I2C GPIO expander
maintainers:
- Patrick Rudolph <patrick.rudolph@9elements.com>
description: |
This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
Pin function configuration is performed on a per-pin basis.
properties:
compatible:
enum:
- cypress,cy8c9520
- cypress,cy8c9540
- cypress,cy8c9560
reg:
maxItems: 1
gpio-controller: true
'#gpio-cells':
description:
The first cell is the GPIO number and the second cell specifies GPIO
flags, as defined in <dt-bindings/gpio/gpio.h>.
const: 2
interrupts:
maxItems: 1
interrupt-controller: true
'#interrupt-cells':
const: 2
gpio-line-names: true
gpio-ranges:
maxItems: 1
gpio-reserved-ranges:
maxItems: 1
vdd-supply:
description:
Optional power supply.
reset-gpios:
description: GPIO connected to the XRES pin
maxItems: 1
patternProperties:
'-pins$':
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
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 = <5 1>;
};
};