[PATCH v2 1/2] dt-binding: leds: Document leds-multi-gpio bindings
From: Hermes Zhang <hidden>
Date: 2021-03-26 05:29:31
Also in:
linux-leds, lkml
Subsystem:
led subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Lee Jones, Pavel Machek, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Hermes Zhang <redacted> 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 <redacted> --- .../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@axis.com> + +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>; + }; +...
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2.20.1