Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml
Extension
.yaml
Size
1035 bytes
Lines
47
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd2801.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Kinetic Technologies KTD2801 one-wire backlight

maintainers:
  - Duje Mihanović <duje.mihanovic@skole.hr>

description: |
  The Kinetic Technologies KTD2801 is a LED backlight driver controlled
  by a single GPIO line. The driver can be controlled with a PWM signal
  or by pulsing the GPIO line to set the backlight level. This is called
  "ExpressWire".

allOf:
  - $ref: common.yaml#

properties:
  compatible:
    const: kinetic,ktd2801

  ctrl-gpios:
    maxItems: 1

  default-brightness: true
  max-brightness: true

required:
  - compatible
  - ctrl-gpios

additionalProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>

    backlight {
        compatible = "kinetic,ktd2801";
        ctrl-gpios = <&gpio 97 GPIO_ACTIVE_HIGH>;
        max-brightness = <210>;
        default-brightness = <100>;
    };

Annotation

Implementation Notes