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The PCA995x chips are I2C controlled LED drivers. Each chip has up to 16 outputs, each one with an individual 8-bit resolution PWM for brightness control. Add binding document. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230713163516.21644-1-marex@denx.de Signed-off-by: Lee Jones <lee@kernel.org>
82 lines
1.7 KiB
YAML
82 lines
1.7 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/nxp,pca995x.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP PCA995x LED controllers
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maintainers:
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- Isai Gaspar <isaiezequiel.gaspar@nxp.com>
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- Marek Vasut <marex@denx.de>
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description:
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The NXP PCA9952/PCA9955B are programmable LED controllers connected via I2C
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that can drive 16 separate lines. Each of them can be individually switched
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on and off, and brightness can be controlled via individual PWM.
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Datasheets are available at
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https://www.nxp.com/docs/en/data-sheet/PCA9952_PCA9955.pdf
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https://www.nxp.com/docs/en/data-sheet/PCA9955B.pdf
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properties:
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compatible:
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enum:
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- nxp,pca9952
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- nxp,pca9955b
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reg:
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maxItems: 1
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"#address-cells":
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const: 1
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"#size-cells":
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const: 0
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patternProperties:
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"^led@[0-9a-f]+$":
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type: object
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$ref: common.yaml#
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unevaluatedProperties: false
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properties:
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reg:
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minimum: 0
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maximum: 15
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required:
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- reg
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/leds/common.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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led-controller@1 {
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compatible = "nxp,pca9955b";
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reg = <0x01>;
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#address-cells = <1>;
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#size-cells = <0>;
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led@0 {
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reg = <0x0>;
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color = <LED_COLOR_ID_RED>;
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function = LED_FUNCTION_POWER;
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};
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led@2 {
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reg = <0x2>;
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color = <LED_COLOR_ID_WHITE>;
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function = LED_FUNCTION_STATUS;
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};
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};
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};
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...
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