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Vikas Manocha97c20932017-04-10 15:03:06 -07001/*
2 * Copyright 2016 - Vikas Manocha <vikas.manocha@st.com>
3 *
4 * This file is dual-licensed: you can use it either under the terms
5 * of the GPL or the X11 license, at your option. Note that this dual
6 * licensing only applies to this file, and not this project as a
7 * whole.
8 *
9 * a) This file is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of the
12 * License, or (at your option) any later version.
13 *
14 * This file is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * Or, alternatively,
20 *
21 * b) Permission is hereby granted, free of charge, to any person
22 * obtaining a copy of this software and associated documentation
23 * files (the "Software"), to deal in the Software without
24 * restriction, including without limitation the rights to use,
25 * copy, modify, merge, publish, distribute, sublicense, and/or
26 * sell copies of the Software, and to permit persons to whom the
27 * Software is furnished to do so, subject to the following
28 * conditions:
29 *
30 * The above copyright notice and this permission notice shall be
31 * included in all copies or substantial portions of the Software.
32 *
33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
34 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
35 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
36 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
37 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
38 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
39 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
40 * OTHER DEALINGS IN THE SOFTWARE.
41 */
42
43/dts-v1/;
44#include "stm32f746.dtsi"
45#include <dt-bindings/memory/stm32-sdram.h>
46
47/ {
48 model = "STMicroelectronics STM32F769-DISCO board";
49 compatible = "st,stm32f769-disco", "st,stm32f7";
50
51 chosen {
52 bootargs = "root=/dev/ram rdinit=/linuxrc";
53 stdout-path = "serial0:115200n8";
54 };
55
56 memory {
57 reg = <0xC0000000 0x1000000>;
58 };
59
60 aliases {
61 serial0 = &usart1;
62 spi0 = &qspi;
63 /* Aliases for gpios so as to use sequence */
64 gpio0 = &gpioa;
65 gpio1 = &gpiob;
66 gpio2 = &gpioc;
67 gpio3 = &gpiod;
68 gpio4 = &gpioe;
69 gpio5 = &gpiof;
70 gpio6 = &gpiog;
71 gpio7 = &gpioh;
72 gpio8 = &gpioi;
73 gpio9 = &gpioj;
74 gpio10 = &gpiok;
75 };
76
77 led1 {
78 compatible = "st,led1";
79 led-gpio = <&gpioj 5 0>;
80 };
81
82 button1 {
83 compatible = "st,button1";
84 button-gpio = <&gpioa 0 0>;
85 };
86};
87
88&clk_hse {
89 clock-frequency = <25000000>;
90};
91
92&pinctrl {
93 usart1_pins_a: usart1@0 {
94 pins1 {
95 pinmux = <STM32F746_PA9_FUNC_USART1_TX>;
96 bias-disable;
97 drive-push-pull;
98 slew-rate = <2>;
99 };
100 pins2 {
101 pinmux = <STM32F746_PA10_FUNC_USART1_RX>;
102 bias-disable;
103 };
104 };
105
106 ethernet_mii: mii@0 {
107 pins {
108 pinmux = <STM32F746_PG13_FUNC_ETH_MII_TXD0_ETH_RMII_TXD0>,
109 <STM32F746_PG14_FUNC_ETH_MII_TXD1_ETH_RMII_TXD1>,
110 <STM32F746_PG11_FUNC_ETH_MII_TX_EN_ETH_RMII_TX_EN>,
111 <STM32F746_PA2_FUNC_ETH_MDIO>,
112 <STM32F746_PC1_FUNC_ETH_MDC>,
113 <STM32F746_PA1_FUNC_ETH_MII_RX_CLK_ETH_RMII_REF_CLK>,
114 <STM32F746_PA7_FUNC_ETH_MII_RX_DV_ETH_RMII_CRS_DV>,
115 <STM32F746_PC4_FUNC_ETH_MII_RXD0_ETH_RMII_RXD0>,
116 <STM32F746_PC5_FUNC_ETH_MII_RXD1_ETH_RMII_RXD1>;
117 slew-rate = <2>;
118 };
119 };
120
121 qspi_pins: qspi@0 {
122 pins {
123 pinmux = <STM32F746_PB2_FUNC_QUADSPI_CLK>,
124 <STM32F746_PB6_FUNC_QUADSPI_BK1_NCS>,
125 <STM32F746_PC9_FUNC_QUADSPI_BK1_IO0>,
126 <STM32F746_PC10_FUNC_QUADSPI_BK1_IO1>,
127 <STM32F746_PD13_FUNC_QUADSPI_BK1_IO3>,
128 <STM32F746_PE2_FUNC_QUADSPI_BK1_IO2>;
129 slew-rate = <2>;
130 };
131 };
132
133 fmc_pins: fmc@0 {
134 pins {
135 pinmux = <STM32F746_PI10_FUNC_FMC_D31>,
136 <STM32F746_PI9_FUNC_FMC_D30>,
137 <STM32F746_PI7_FUNC_FMC_D29>,
138 <STM32F746_PI6_FUNC_FMC_D28>,
139 <STM32F746_PI3_FUNC_FMC_D27>,
140 <STM32F746_PI2_FUNC_FMC_D26>,
141 <STM32F746_PI1_FUNC_FMC_D25>,
142 <STM32F746_PI0_FUNC_FMC_D24>,
143 <STM32F746_PH15_FUNC_FMC_D23>,
144 <STM32F746_PH14_FUNC_FMC_D22>,
145 <STM32F746_PH13_FUNC_FMC_D21>,
146 <STM32F746_PH12_FUNC_FMC_D20>,
147 <STM32F746_PH11_FUNC_FMC_D19>,
148 <STM32F746_PH10_FUNC_FMC_D18>,
149 <STM32F746_PH9_FUNC_FMC_D17>,
150 <STM32F746_PH8_FUNC_FMC_D16>,
151
152 <STM32F746_PD10_FUNC_FMC_D15>,
153 <STM32F746_PD9_FUNC_FMC_D14>,
154 <STM32F746_PD8_FUNC_FMC_D13>,
155 <STM32F746_PE15_FUNC_FMC_D12>,
156 <STM32F746_PE14_FUNC_FMC_D11>,
157 <STM32F746_PE13_FUNC_FMC_D10>,
158 <STM32F746_PE12_FUNC_FMC_D9>,
159 <STM32F746_PE11_FUNC_FMC_D8>,
160 <STM32F746_PE10_FUNC_FMC_D7>,
161 <STM32F746_PE9_FUNC_FMC_D6>,
162 <STM32F746_PE8_FUNC_FMC_D5>,
163 <STM32F746_PE7_FUNC_FMC_D4>,
164 <STM32F746_PD1_FUNC_FMC_D3>,
165 <STM32F746_PD0_FUNC_FMC_D2>,
166 <STM32F746_PD15_FUNC_FMC_D1>,
167 <STM32F746_PD14_FUNC_FMC_D0>,
168
169 <STM32F746_PI5_FUNC_FMC_NBL3>,
170 <STM32F746_PI4_FUNC_FMC_NBL2>,
171 <STM32F746_PE1_FUNC_FMC_NBL1>,
172 <STM32F746_PE0_FUNC_FMC_NBL0>,
173
174 <STM32F746_PG5_FUNC_FMC_A15_FMC_BA1>,
175 <STM32F746_PG4_FUNC_FMC_A14_FMC_BA0>,
176
177 <STM32F746_PG1_FUNC_FMC_A11>,
178 <STM32F746_PG0_FUNC_FMC_A10>,
179 <STM32F746_PF15_FUNC_FMC_A9>,
180 <STM32F746_PF14_FUNC_FMC_A8>,
181 <STM32F746_PF13_FUNC_FMC_A7>,
182 <STM32F746_PF12_FUNC_FMC_A6>,
183 <STM32F746_PF5_FUNC_FMC_A5>,
184 <STM32F746_PF4_FUNC_FMC_A4>,
185 <STM32F746_PF3_FUNC_FMC_A3>,
186 <STM32F746_PF2_FUNC_FMC_A2>,
187 <STM32F746_PF1_FUNC_FMC_A1>,
188 <STM32F746_PF0_FUNC_FMC_A0>,
189
190 <STM32F746_PH3_FUNC_FMC_SDNE0>,
191 <STM32F746_PH5_FUNC_FMC_SDNWE>,
192 <STM32F746_PF11_FUNC_FMC_SDNRAS>,
193 <STM32F746_PG15_FUNC_FMC_SDNCAS>,
194 <STM32F746_PH2_FUNC_FMC_SDCKE0>,
195 <STM32F746_PG8_FUNC_FMC_SDCLK>;
196 slew-rate = <2>;
197 };
198 };
199};
200
201&usart1 {
202 pinctrl-0 = <&usart1_pins_a>;
203 pinctrl-names = "default";
204 status = "okay";
205};
206
207&fmc {
208 pinctrl-0 = <&fmc_pins>;
209 pinctrl-names = "default";
210 status = "okay";
211
Vikas Manocha97c20932017-04-10 15:03:06 -0700212 /* Memory configuration from sdram datasheet MT48LC_4M32_B2B5-6A */
213 bank1: bank@0 {
214 st,sdram-control = /bits/ 8 <NO_COL_8 NO_ROW_12 MWIDTH_32 BANKS_4
215 CAS_3 SDCLK_2 RD_BURST_EN
216 RD_PIPE_DL_0>;
217 st,sdram-timing = /bits/ 8 <TMRD_2 TXSR_6 TRAS_4 TRC_6 TWR_2
218 TRP_2 TRCD_2>;
219 /* refcount = (64msec/total_row_sdram)*freq - 20 */
220 st,sdram-refcount = < 1542 >;
221 };
222};
223
224&mac {
225 status = "okay";
226 pinctrl-0 = <&ethernet_mii>;
227 phy-mode = "rmii";
228 phy-handle = <&phy0>;
229
230 mdio0 {
231 #address-cells = <1>;
232 #size-cells = <0>;
233 compatible = "snps,dwmac-mdio";
234 phy0: ethernet-phy@0 {
235 reg = <0>;
236 };
237 };
238};
239
240&qspi {
241 pinctrl-0 = <&qspi_pins>;
242 status = "okay";
243
244 qflash0: n25q128a {
245 #address-cells = <1>;
246 #size-cells = <1>;
247 compatible = "micron,n25q128a13", "spi-flash";
248 spi-max-frequency = <108000000>;
249 spi-tx-bus-width = <1>;
250 spi-rx-bus-width = <1>;
251 memory-map = <0x90000000 0x1000000>;
252 reg = <0>;
253 };
254};