34 lines
689 B
Plaintext
34 lines
689 B
Plaintext
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/*
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* Copyright (c) 2021, STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <dt-bindings/led/led.h>
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&lpspi3 {
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led_strip: ws2812@0 {
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compatible = "worldsemi,ws2812-spi";
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label = "WS2812";
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/* SPI */
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reg = <0>; /* ignored, but necessary for SPI bindings */
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spi-max-frequency = <6400000>;
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/* WS2812 */
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chain-length = <2>; /* arbitrary; change at will */
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spi-cpha;
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spi-one-frame = <0xf0>; /* 11110000: 625 ns high and 625 ns low */
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spi-zero-frame = <0xc0>; /* 11000000: 312.5 ns high and 937.5 ns low */
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color-mapping = <LED_COLOR_ID_GREEN
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LED_COLOR_ID_RED
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LED_COLOR_ID_BLUE>;
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};
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};
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/ {
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aliases {
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led-strip = &led_strip;
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};
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};
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