From: Hermes Zhang <chenhuiz@xxxxxxxx> This binding represents LED devices which are controller with multiple GPIO lines in order to achieve more than two brightness states. Signed-off-by: Hermes Zhang <chenhuiz@xxxxxxxx> --- .../bindings/leds/leds-multi-gpio.yaml | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-multi-gpio.yaml diff --git a/Documentation/devicetree/bindings/leds/leds-multi-gpio.yaml b/Documentation/devicetree/bindings/leds/leds-multi-gpio.yaml new file mode 100644 index 000000000000..1549f21e8d6e --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-multi-gpio.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/leds-multi-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Multiple GPIOs LED driver + +maintainers: + - Hermes Zhang <chenhuiz@xxxxxxxx> + +description: + This will support some LED made of multiple GPIOs and the brightness of the + LED could map to different states of the GPIOs. + +properties: + compatible: + const: multi-gpio-led + + led-gpios: + description: Array of one or more GPIOs pins used to control the LED. + minItems: 1 + maxItems: 8 # Should be enough + + led-states: + description: | + The array list the supported states here which will map to brightness + from 0 to maximum. Each item in the array will present all the GPIOs + value by bit. + $ref: /schemas/types.yaml#/definitions/uint8-array + minItems: 1 + maxItems: 256 # Should be enough + +required: + - compatible + - led-gpios + - led-states + +additionalProperties: false + +examples: + - | + gpios-led { + compatible = "multi-gpio-led"; + + led-gpios = <&gpio0 23 0x1>, + <&gpio0 24 0x1>; + led-states = /bits/ 8 <0x00 0x01 0x02 0x03>; + }; +... -- 2.20.1
