/* * Copyright (c) 2020 Erwin Rol * * SPDX-License-Identifier: Apache-2.0 */ &rcc { /* * Reduce bus clock speed to be able * to reach SPI_LOOPBACK_SLOW_FREQ = 500000 * with max prescaler 256 */ apb2-prescaler = <2>; }; &spi1 { dmas = <&dmamux1 0 11 (STM32_DMA_PERIPH_TX | STM32_DMA_PRIORITY_HIGH) &dmamux1 8 10 (STM32_DMA_PERIPH_RX | STM32_DMA_PRIORITY_HIGH)>; dma-names = "tx", "rx"; slow@0 { compatible = "test-spi-loopback-slow"; reg = <0>; spi-max-frequency = <500000>; }; fast@0 { compatible = "test-spi-loopback-fast"; reg = <0>; spi-max-frequency = <16000000>; }; }; &dma1 { status = "okay"; }; &dma2 { status = "okay"; }; &dmamux1 { status = "okay"; };