2021-05-27 00:09:36 +05:00
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd253.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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2021-07-13 00:01:19 +05:00
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title: Kinetic Technologies KTD253 and KTD259 one-wire backlight
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2021-05-27 00:09:36 +05:00
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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description: |
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The Kinetic Technologies KTD253 and KTD259 are white LED backlights
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controlled by a single GPIO line. If you just turn on the backlight
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it goes to maximum backlight then you can set the level of backlight
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using pulses on the enable wire. This is sometimes referred to as
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"expresswire".
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allOf:
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- $ref: common.yaml#
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properties:
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compatible:
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2021-07-13 00:01:19 +05:00
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items:
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- enum:
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- kinetic,ktd253
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- kinetic,ktd259
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enable-gpios:
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description: GPIO to use to enable/disable and dim the backlight.
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maxItems: 1
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default-brightness: true
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max-brightness: true
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required:
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- compatible
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- enable-gpios
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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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backlight {
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compatible = "kinetic,ktd253";
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enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
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default-brightness = <13>;
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};
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