135 lines
2.6 KiB
YAML
135 lines
2.6 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/cypress,cy8c95x0.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Cypress CY8C95X0 I2C GPIO expander
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maintainers:
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- Patrick Rudolph <patrick.rudolph@9elements.com>
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description: |
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This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
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Pin function configuration is performed on a per-pin basis.
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properties:
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compatible:
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enum:
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- cypress,cy8c9520
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- cypress,cy8c9540
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- cypress,cy8c9560
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reg:
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maxItems: 1
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gpio-controller: true
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'#gpio-cells':
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description:
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The first cell is the GPIO number and the second cell specifies GPIO
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flags, as defined in <dt-bindings/gpio/gpio.h>.
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const: 2
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interrupts:
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maxItems: 1
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interrupt-controller: true
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'#interrupt-cells':
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const: 2
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gpio-line-names: true
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gpio-ranges:
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maxItems: 1
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gpio-reserved-ranges:
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maxItems: 1
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vdd-supply:
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description:
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Optional power supply.
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patternProperties:
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'-pins$':
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type: object
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description:
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Pinctrl node's client devices use subnodes for desired pin configuration.
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Client device subnodes use below standard properties.
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$ref: pincfg-node.yaml#
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properties:
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pins:
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description:
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List of gpio pins affected by the properties specified in this
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subnode.
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items:
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pattern: '^gp([0-7][0-7])$'
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minItems: 1
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maxItems: 60
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function:
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description:
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Specify the alternative function to be configured for the specified
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pins.
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enum: [ gpio, pwm ]
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bias-pull-down: true
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bias-pull-up: true
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bias-disable: true
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output-high: true
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output-low: true
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drive-push-pull: true
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drive-open-drain: true
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drive-open-source: true
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required:
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- pins
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- function
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additionalProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-controller
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- '#interrupt-cells'
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- gpio-controller
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- '#gpio-cells'
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additionalProperties: false
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allOf:
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- $ref: "pinctrl.yaml#"
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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pinctrl@20 {
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compatible = "cypress,cy8c9520";
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reg = <0x20>;
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gpio-controller;
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#gpio-cells = <2>;
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#interrupt-cells = <2>;
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interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-controller;
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vdd-supply = <&p3v3>;
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gpio-reserved-ranges = <5 1>;
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};
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};
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