worldsemi,ws2812-pulse-io

Overview

Name:

worldsemi,ws2812-pulse-io

Vendor:

Worldsemi Co., Limited

Used in:

List of boards using this compatible

Driver:

drivers/led_strip/ws2812_pulse_io.c

Description

Worldsemi WS2812 LED strip, pulse_io binding

Drives a WS2812 (or compatible) LED strip through a pulse_io
controller channel in CELL mode.

Examples

/ {
      led_strip: ws2812 {
          compatible = "worldsemi,ws2812-pulse-io";
          pulse-ios = <&rmt 0>;
          chain-length = <1>;
          color-mapping = <LED_COLOR_ID_GREEN
                           LED_COLOR_ID_RED
                           LED_COLOR_ID_BLUE>;
      };
};

Properties

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
pulse-ios	phandle-array	pulse_io controller and transmit channel driving the strip data line. The pin is routed through the controller pinctrl state. This property is required.
reset-delay	int	Minimum delay to wait (in microseconds) to make sure that the strip has latched the signal. If omitted, a default value of 8 microseconds is used. This default is good for the WS2812 controllers. Note that despite the WS2812 datasheet states that a 50 microseconds delay is required, it seems 6 microseconds is enough. The default is set to 8 microseconds just to be safe. Default value: 8
chain-length	int	The number of devices in the daisy-chain. This property is required.
color-mapping	array	Channel to color mapping (or pixel order). For example a GRB channel to color mapping would be color-mapping = <LED_COLOR_ID_GREEN LED_COLOR_ID_RED LED_COLOR_ID_BLUE>; This property is required.