linux-stable/Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml
Geert Uytterhoeven 56b01acc1c dt-bindings: gpio: fairchild,74hc595: Convert to json-schema
Convert the Generic 8-bit shift register Device Tree binding
documentation to json-schema.

Rename from gpio-74x164 to fairchild,74hc595, as the former refers to
the Linux driver, and not to a hardware name.
Add the missing hog description.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-05-05 16:07:41 +02:00

77 lines
1.5 KiB
YAML

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/fairchild,74hc595.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Generic 8-bit shift register
maintainers:
- Maxime Ripard <mripard@kernel.org>
properties:
compatible:
enum:
- fairchild,74hc595
- nxp,74lvc594
reg:
maxItems: 1
gpio-controller: true
'#gpio-cells':
description:
The second cell is only used to specify the GPIO polarity.
const: 2
registers-number:
description: Number of daisy-chained shift registers
enable-gpios:
description: GPIO connected to the OE (Output Enable) pin.
maxItems: 1
spi-max-frequency: true
patternProperties:
"^(hog-[0-9]+|.+-hog(-[0-9]+)?)$":
type: object
properties:
gpio-hog: true
gpios: true
output-high: true
output-low: true
line-name: true
required:
- gpio-hog
- gpios
additionalProperties: false
required:
- compatible
- reg
- gpio-controller
- '#gpio-cells'
- registers-number
additionalProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
gpio5: gpio5@0 {
compatible = "fairchild,74hc595";
reg = <0>;
gpio-controller;
#gpio-cells = <2>;
registers-number = <4>;
spi-max-frequency = <100000>;
};
};