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|
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/nxp,pca963x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP PCA963x LED controllers
maintainers:
- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
description: |
The NXP PCA963x are I2C-controlled LED drivers optimized for
Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED is
individually controllable and has its own PWM controller.
Datasheets are available at
- https://www.nxp.com/docs/en/data-sheet/PCA9632.pdf
- https://www.nxp.com/docs/en/data-sheet/PCA9633.pdf
- https://www.nxp.com/docs/en/data-sheet/PCA9634.pdf
- https://www.nxp.com/docs/en/data-sheet/PCA9635.pdf
properties:
compatible:
enum:
- nxp,pca9632
- nxp,pca9633
- nxp,pca9634
- nxp,pca9635
reg:
maxItems: 1
"#address-cells":
const: 1
"#size-cells":
const: 0
nxp,hw-blink:
type: boolean
description:
Use hardware blinking instead of software blinking
nxp,inverted-out:
type: boolean
description:
Invert the polarity of the generated PWM.
nxp,period-scale:
$ref: /schemas/types.yaml#/definitions/uint32
description:
In some configurations, the chip blinks faster than expected. This
parameter provides a scaling ratio (fixed point, decimal divided by 1000)
to compensate, e.g. 1300=1.3x and 750=0.75x.
nxp,totem-pole:
type: boolean
description:
Use totem pole (push-pull) instead of open-drain (pca9632 defaults to
open-drain, newer chips to totem pole).
patternProperties:
"^led@[0-9a-f]+$":
type: object
$ref: common.yaml#
unevaluatedProperties: false
properties:
reg:
minimum: 0
required:
- reg
allOf:
- if:
properties:
compatible:
contains:
enum:
- nxp,pca9632
- nxp,pca9633
then:
patternProperties:
"^led@[0-9a-f]+$":
properties:
reg:
maximum: 3
else:
patternProperties:
"^led@[0-9a-f]+$":
properties:
reg:
maximum: 7
additionalProperties: false
examples:
- |
#include <dt-bindings/leds/common.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
led-controller@62 {
compatible = "nxp,pca9632";
reg = <0x62>;
#address-cells = <1>;
#size-cells = <0>;
led@0 {
reg = <0>;
color = <LED_COLOR_ID_RED>;
function = LED_FUNCTION_STATUS;
};
led@1 {
reg = <1>;
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_STATUS;
};
led@2 {
reg = <2>;
color = <LED_COLOR_ID_BLUE>;
function = LED_FUNCTION_STATUS;
};
led@3 {
reg = <3>;
color = <LED_COLOR_ID_WHITE>;
function = LED_FUNCTION_STATUS;
};
};
};
...
|
