65 lines
1.7 KiB
YAML
65 lines
1.7 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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$id: http://devicetree.org/schemas/serio/ps2-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: GPIO based PS/2
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maintainers:
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- Danilo Krummrich <danilokrummrich@dk-develop.de>
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properties:
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compatible:
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const: ps2-gpio
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data-gpios:
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description:
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the gpio used for the data signal - this should be flagged as
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active high using open drain with (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)
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from <dt-bindings/gpio/gpio.h> since the signal is open drain by
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definition
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maxItems: 1
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clk-gpios:
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description:
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the gpio used for the clock signal - this should be flagged as
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active high using open drain with (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)
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from <dt-bindings/gpio/gpio.h> since the signal is open drain by
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definition
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maxItems: 1
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interrupts:
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description:
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The given interrupt should trigger on the falling edge of the clock line.
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maxItems: 1
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write-enable:
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type: boolean
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description:
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Indicates whether write function is provided to serio device. Possibly
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providing the write function will not work, because of the tough timing
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requirements.
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required:
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- compatible
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- data-gpios
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- clk-gpios
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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ps2 {
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compatible = "ps2-gpio";
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interrupt-parent = <&gpio>;
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interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
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data-gpios = <&gpio 24 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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clk-gpios = <&gpio 23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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write-enable;
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};
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