1/* 2 * Copyright 2016 - Michael Kurz <michi.kurz@gmail.com> 3 * Copyright 2016 - Vikas MANOCHA <vikas.manocha@st.com> 4 * 5 * Based on: 6 * stm32f469-disco.dts from Linux 7 * Copyright 2016 - Lee Jones <lee.jones@linaro.org> 8 * 9 * This file is dual-licensed: you can use it either under the terms 10 * of the GPL or the X11 license, at your option. Note that this dual 11 * licensing only applies to this file, and not this project as a 12 * whole. 13 * 14 * a) This file is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License as 16 * published by the Free Software Foundation; either version 2 of the 17 * License, or (at your option) any later version. 18 * 19 * This file is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * Or, alternatively, 25 * 26 * b) Permission is hereby granted, free of charge, to any person 27 * obtaining a copy of this software and associated documentation 28 * files (the "Software"), to deal in the Software without 29 * restriction, including without limitation the rights to use, 30 * copy, modify, merge, publish, distribute, sublicense, and/or 31 * sell copies of the Software, and to permit persons to whom the 32 * Software is furnished to do so, subject to the following 33 * conditions: 34 * 35 * The above copyright notice and this permission notice shall be 36 * included in all copies or substantial portions of the Software. 37 * 38 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 39 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 40 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 41 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 42 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 43 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 44 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 45 * OTHER DEALINGS IN THE SOFTWARE. 46 */ 47 48/dts-v1/; 49#include "stm32f746.dtsi" 50#include <dt-bindings/memory/stm32-sdram.h> 51 52/ { 53 model = "STMicroelectronics STM32F746-DISCO board"; 54 compatible = "st,stm32f746-disco", "st,stm32f746"; 55 56 chosen { 57 bootargs = "root=/dev/ram rdinit=/linuxrc"; 58 stdout-path = "serial0:115200n8"; 59 }; 60 61 memory { 62 reg = <0xC0000000 0x800000>; 63 }; 64 65 aliases { 66 serial0 = &usart1; 67 spi0 = &qspi; 68 /* Aliases for gpios so as to use sequence */ 69 gpio0 = &gpioa; 70 gpio1 = &gpiob; 71 gpio2 = &gpioc; 72 gpio3 = &gpiod; 73 gpio4 = &gpioe; 74 gpio5 = &gpiof; 75 gpio6 = &gpiog; 76 gpio7 = &gpioh; 77 gpio8 = &gpioi; 78 gpio9 = &gpioj; 79 gpio10 = &gpiok; 80 }; 81}; 82 83&clk_hse { 84 clock-frequency = <25000000>; 85}; 86 87&usart1 { 88 pinctrl-0 = <&usart1_pins_a>; 89 pinctrl-names = "default"; 90 status = "okay"; 91}; 92 93&fmc { 94 pinctrl-0 = <&fmc_pins>; 95 pinctrl-names = "default"; 96 status = "okay"; 97 98 mr-nbanks = <1>; 99 /* sdram memory configuration from sdram datasheet IS42S16400J */ 100 bank1: bank@0 { 101 st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_16 BANKS_2 102 CAS_3 RD_BURST_EN RD_PIPE_DL_0>; 103 st,sdram-timing = /bits/ 8 <TMRD_1 TXSR_60 TRAS_42 TRC_60 TRP_18 104 TRCD_18>; 105 }; 106}; 107 108&mac { 109 status = "okay"; 110 pinctrl-0 = <ðernet_mii>; 111 phy-mode = "rmii"; 112 phy-handle = <&phy0>; 113 114 mdio0 { 115 #address-cells = <1>; 116 #size-cells = <0>; 117 compatible = "snps,dwmac-mdio"; 118 phy0: ethernet-phy@0 { 119 reg = <0>; 120 }; 121 }; 122}; 123 124&qspi { 125 pinctrl-0 = <&qspi_pins>; 126 status = "okay"; 127 128 qflash0: n25q128a { 129 #address-cells = <1>; 130 #size-cells = <1>; 131 compatible = "micron,n25q128a13", "spi-flash"; 132 spi-max-frequency = <108000000>; 133 spi-tx-bus-width = <1>; 134 spi-rx-bus-width = <1>; 135 memory-map = <0x90000000 0x1000000>; 136 reg = <0>; 137 }; 138}; 139