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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/allwinner,sun50i-a100-ledc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Allwinner A100 LED Controller
maintainers:
- Samuel Holland <samuel@sholland.org>
description:
The LED controller found in Allwinner sunxi SoCs uses a one-wire serial
interface to drive up to 1024 RGB LEDs.
properties:
compatible:
oneOf:
- const: allwinner,sun50i-a100-ledc
- items:
- enum:
- allwinner,sun20i-d1-ledc
- allwinner,sun50i-r329-ledc
- const: allwinner,sun50i-a100-ledc
reg:
maxItems: 1
"#address-cells":
const: 1
"#size-cells":
const: 0
interrupts:
maxItems: 1
clocks:
items:
- description: Bus clock
- description: Module clock
clock-names:
items:
- const: bus
- const: mod
resets:
maxItems: 1
dmas:
maxItems: 1
description: TX DMA channel
dma-names:
const: tx
allwinner,pixel-format:
description: Pixel format (subpixel transmission order), default is "grb"
enum:
- bgr
- brg
- gbr
- grb
- rbg
- rgb
allwinner,t0h-ns:
default: 336
description: Length of high pulse when transmitting a "0" bit
allwinner,t0l-ns:
default: 840
description: Length of low pulse when transmitting a "0" bit
allwinner,t1h-ns:
default: 882
description: Length of high pulse when transmitting a "1" bit
allwinner,t1l-ns:
default: 294
description: Length of low pulse when transmitting a "1" bit
allwinner,treset-ns:
default: 300000
description: Minimum delay between transmission frames
patternProperties:
"^multi-led@[0-9a-f]+$":
type: object
$ref: leds-class-multicolor.yaml#
unevaluatedProperties: false
properties:
reg:
minimum: 0
maximum: 1023
description: Index of the LED in the series (must be contiguous)
required:
- reg
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
- resets
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/leds/common.h>
ledc: led-controller@2008000 {
compatible = "allwinner,sun20i-d1-ledc",
"allwinner,sun50i-a100-ledc";
reg = <0x2008000 0x400>;
interrupts = <36 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu 12>, <&ccu 34>;
clock-names = "bus", "mod";
resets = <&ccu 12>;
dmas = <&dma 42>;
dma-names = "tx";
#address-cells = <1>;
#size-cells = <0>;
multi-led@0 {
reg = <0x0>;
color = <LED_COLOR_ID_RGB>;
function = LED_FUNCTION_INDICATOR;
};
};
...
|
