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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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4b79ec9a55
The KTD259 is just a newer version of the KTD253 and works all the same. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
50 lines
1.2 KiB
YAML
50 lines
1.2 KiB
YAML
# 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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title: Kinetic Technologies KTD253 and KTD259 one-wire backlight
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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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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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