This adds device tree bindings for the Kinetic KTD253 white LED backlight driver.
Cc: devicetree@vger.kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org --- .../leds/backlight/kinetic,ktd253.yaml | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml new file mode 100644 index 000000000000..610bf9a0e270 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd253.yaml @@ -0,0 +1,48 @@ +# 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. + +properties: + compatible: + const: kinetic,ktd253 + + gpios: + description: GPIO to use to enable/disable and dim the backlight. + maxItems: 1 + + default-brightness: + description: Default brightness level on boot. 0 is off. + minimum: 0 + maximum: 255 + + max-brightness: + description: Maximum brightness that is allowed during runtime. + minimum: 0 + maximum: 255 + +required: + - compatible + - gpios + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + backlight { + compatible = "kinetic,ktd253"; + gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>; + default-on; + default-brightness = <160>; + };