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LTC3220 18 Channel LED driver Signed-off-by: Edelweise Escala --- .../devicetree/bindings/leds/leds-ltc3220.yaml | 131 +++++++++++++++++= ++++ MAINTAINERS | 7 ++ 2 files changed, 138 insertions(+) diff --git a/Documentation/devicetree/bindings/leds/leds-ltc3220.yaml b/Doc= umentation/devicetree/bindings/leds/leds-ltc3220.yaml new file mode 100644 index 000000000000..33285a7ac7a3 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-ltc3220.yaml @@ -0,0 +1,131 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/leds-ltc3220.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices LTC3220 LED Drivers + +maintainers: + - Edelweise Escala + +description: Bindings for the Analog Devices LTC3220 18 channel LED Driver= s. + + For more product information please see the link below + https://www.analog.com/en/products/ltc3220.html + +properties: + compatible: + enum: + - adi,ltc3220 + - adi,ltc3220-1 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + reset-gpios: + maxItems: 1 + description: GPIO attached to the chip's reset pin + + adi,force-cpo-level: + $ref: /schemas/types.yaml#/definitions/string + description: Forces the Charge Pump Output to a specified multiplier. + enum: + - "0" # Auto(default) - Automatically selects optimal charge pump mo= de + - "1.5" + - "2" + - "1" + default: "0" + + adi,quick-write: + type: boolean + description: If present, LED 1 output becomes a master control that + simultaneously updates all 18 LED outputs using the hardware's quick= -write + mode. When enabled, led@1 must be defined in the device tree to prov= ide + the control interface, even if no physical LED is connected to the D1 + output pin. When disabled or not present, LED 1 operates as a normal + independent LED output. + +patternProperties: + "^led@([1-9]|1[0-8])$": + type: object + $ref: /schemas/leds/common.yaml# + unevaluatedProperties: false + properties: + reg: + description: Output channel for the LED (1-18 maps to LED outputs = D1-D18). + minimum: 1 + maximum: 18 + + required: + - reg + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + led-controller@1c { + compatible =3D "adi,ltc3220"; + reg =3D <0x1c>; + #address-cells =3D <1>; + #size-cells =3D <0>; + reset-gpios =3D <&gpio 17 GPIO_ACTIVE_LOW>; + adi,force-cpo-level =3D "0"; + adi,quick-write; + + led@1 { + reg =3D <1>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <1>; + }; + + led@2 { + reg =3D <2>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <2>; + }; + + led@3 { + reg =3D <3>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <3>; + }; + + led@4 { + reg =3D <4>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <4>; + }; + + led@5 { + reg =3D <5>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <5>; + }; + + led@6 { + reg =3D <6>; + function =3D LED_FUNCTION_INDICATOR; + function-enumerator =3D <6>; + }; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 327d74ca7ecb..d640c35d1f93 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14955,6 +14955,13 @@ W: https://ez.analog.com/linux-software-drivers F: Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml F: drivers/iio/temperature/ltc2983.c =20 +LTC3220 LED DRIVER +M: Edelweise Escala +L: linux-leds@vger.kernel.org +S: Maintained +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/leds/leds-ltc3220.yaml + LTC4282 HARDWARE MONITOR DRIVER M: Nuno Sa L: linux-hwmon@vger.kernel.org --=20 2.43.0