Add Device Tree bindings for Texas Instruments LM3509 - a High Efficiency Boost for White LED's and/or OLED Displays Signed-off-by: Patrick Gansterer <paroga@xxxxxxxxxx> --- .../bindings/leds/backlight/ti,lm3509.yaml | 81 +++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml diff --git a/Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml b/Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml new file mode 100644 index 000000000000..8fbb83934e30 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml @@ -0,0 +1,81 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/ti,lm3509.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TI LM3509 High Efficiency Boost for White LED's and/or OLED Displays + +maintainers: + - Patrick Gansterer <paroga@xxxxxxxxxx> + +description: | + The LM3509 current mode boost converter offers two separate outputs. + https://www.ti.com/product/LM3509 + +properties: + compatible: + const: ti,lm3509 + + reg: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + default-brightness: + minimum: 0 + maximum: 15 + + max-brightness: + minimum: 0 + maximum: 15 + + ti,brightness-rate-of-change-us: + description: Brightness Rate of Change in microseconds. + enum: [51, 13000, 26000, 52000] + + ti,oled-mode: + description: Enable OLED mode. + type: boolean + + ti,unison-mode: + description: | + Enable unison mode. If disabled, then it will provide two + independent controllable LED currents for BMAIN and BSUB. + type: boolean + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + backlight@36 { + compatible = "ti,lm3509"; + reg = <0x36>; + + reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; + + ti,unison-mode; + }; + }; + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + backlight@36 { + compatible = "ti,lm3509"; + reg = <0x36>; + + ti,brightness-rate-of-change-us = <52000>; + }; + }; -- 2.44.0
