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