80 lines
1.6 KiB
YAML
80 lines
1.6 KiB
YAML
# 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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$id: http://devicetree.org/schemas/gpio/fairchild,74hc595.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic 8-bit shift register
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maintainers:
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- Maxime Ripard <mripard@kernel.org>
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properties:
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compatible:
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enum:
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- fairchild,74hc595
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- nxp,74lvc594
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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 second cell is only used to specify the GPIO polarity.
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const: 2
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registers-number:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Number of daisy-chained shift registers
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enable-gpios:
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description: GPIO connected to the OE (Output Enable) pin.
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maxItems: 1
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patternProperties:
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"^(hog-[0-9]+|.+-hog(-[0-9]+)?)$":
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type: object
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properties:
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gpio-hog: true
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gpios: true
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output-high: true
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output-low: true
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line-name: true
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required:
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- gpio-hog
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- gpios
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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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- gpio-controller
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- '#gpio-cells'
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- registers-number
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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unevaluatedProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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gpio5: gpio5@0 {
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compatible = "fairchild,74hc595";
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reg = <0>;
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gpio-controller;
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#gpio-cells = <2>;
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registers-number = <4>;
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spi-max-frequency = <100000>;
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};
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};
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