Commit 922235a9 authored by Duje Mihanović's avatar Duje Mihanović Committed by Lee Jones
Browse files

dt-bindings: backlight: Add Kinetic KTD2801 binding 



KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte.
The brightness can be set using PWM or the ExpressWire protocol. Add
a DT binding for the KTD2801.

Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarDaniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: default avatarDuje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/r/20240125-ktd2801-v5-3-e22da232a825@skole.hr


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent b5a8c50e

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

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# 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>;

    };