Document Skyworks AAT2870 LED Backlight Driver and Multiple LDO Lighting Management Unit.
Signed-off-by: Svyatoslav Ryhel <[email protected]> --- .../bindings/leds/skyworks,aat2870.yaml | 127 ++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml diff --git a/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml b/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml new file mode 100644 index 0000000000000..6dfcd1fa399ca --- /dev/null +++ b/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/skyworks,aat2870.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AAT2870 LED Backlight Driver and Multiple LDO Lighting Management Unit + +maintainers: + - Svyatoslav Ryhel <[email protected]> + +properties: + compatible: + const: skyworks,aat2870 + + reg: + maxItems: 1 + + enable-gpios: + description: GPIO connected to EN pin. + maxItems: 1 + + vin-supply: + description: Regulator providing power to the "IN" pin. + + backlight: + $ref: /schemas/leds/backlight/common.yaml# + unevaluatedProperties: false + + properties: + compatible: + const: skyworks,aat2870-backlight + + led-max-microamp: + minimum: 450000 + maximum: 27900000 + default: 450000 + + max-brightness: + default: 255 + + skyworks,channels: + description: layout of active channels, where each bit represents + one of 8 channels. + $ref: /schemas/types.yaml#/definitions/uint8 + default: 0xff + + required: + - compatible + + regulators: + type: object + additionalProperties: false + + properties: + compatible: + const: skyworks,aat2870-regulator + + in-ldo-supply: + description: Phandle to parent supply of regulators populated under + regulators node. They all share same parent. + + patternProperties: + "^(ldo-(a|b|c|d))$": + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + + required: + - compatible + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@60 { + compatible = "skyworks,aat2870"; + reg = <0x60>; + + enable-gpios = <&gpio 139 GPIO_ACTIVE_HIGH>; + vin-supply = <&vdd_3v3_vbat>; + + backlight { + compatible = "skyworks,aat2870-backlight"; + + skyworks,channels = /bits/ 8 <0xff>; + led-max-microamp = <27900000>; + }; + + regulators { + compatible = "skyworks,aat2870-regulator"; + + in-ldo-supply = <&vdd_3v3_vbat>; + + ldo-a { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + }; + + ldo-b { + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + }; + + ldo-c { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + }; + + ldo-d { + regulator-min-microvolt = <2700000>; + regulator-max-microvolt = <2800000>; + }; + }; + }; + }; -- 2.53.0
