/* * Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd. * * SPDX-License-Identifier: Apache-2.0 */ #include &spi3 { /* Workaround to support WS2812 driver */ line-idle-low; led_strip: ws2812@0 { compatible = "worldsemi,ws2812-spi"; /* SPI */ reg = <0>; /* ignored, but necessary for SPI bindings */ spi-max-frequency = <6400000>; /* WS2812 */ chain-length = <1>; /* arbitrary; change at will */ spi-cpha; spi-one-frame = <0xf0>; /* 11110000: 625 ns high and 625 ns low */ spi-zero-frame = <0xc0>; /* 11000000: 312.5 ns high and 937.5 ns low */ color-mapping = ; }; }; &pinctrl { spim3_default: spim3_default { group2 { pinmux = ; }; }; }; / { aliases { led-strip = &led_strip; }; };