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Patrice Chotardd983a0f2017-09-13 18:00:09 +02001/*
2 * Copyright 2017 - Patrice Chotard <patrice.chotard@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 "stm32h743.dtsi"
45#include "stm32h743-pinctrl.dtsi"
Patrice Chotarda1e384b2017-09-13 18:00:11 +020046#include <dt-bindings/memory/stm32-sdram.h>
Patrice Chotardd983a0f2017-09-13 18:00:09 +020047
48/ {
49 model = "STMicroelectronics STM32H743i-Discovery board";
50 compatible = "st,stm32h743i-disco", "st,stm32h743";
51
52 chosen {
53 bootargs = "root=/dev/ram";
54 stdout-path = "serial0:115200n8";
55 };
56
57 memory {
58 reg = <0xd0000000 0x2000000>;
59 };
60
61 aliases {
62 serial0 = &usart2;
Patrice Chotarda1e384b2017-09-13 18:00:11 +020063 gpio0 = &gpioa;
64 gpio1 = &gpiob;
65 gpio2 = &gpioc;
66 gpio3 = &gpiod;
67 gpio4 = &gpioe;
68 gpio5 = &gpiof;
69 gpio6 = &gpiog;
70 gpio7 = &gpioh;
71 gpio8 = &gpioi;
72 gpio9 = &gpioj;
73 gpio10 = &gpiok;
Patrice Chotardd983a0f2017-09-13 18:00:09 +020074 };
75};
76
Patrice Chotardd983a0f2017-09-13 18:00:09 +020077&usart2 {
78 pinctrl-0 = <&usart2_pins>;
79 pinctrl-names = "default";
80 status = "okay";
81};
Patrice Chotarda1e384b2017-09-13 18:00:11 +020082
83&fmc {
84 pinctrl-0 = <&fmc_pins>;
85 pinctrl-names = "default";
86 status = "okay";
87
88 /*
89 * Memory configuration from sdram datasheet IS42S32800G-6BLI
90 * firsct bank is bank@0
91 * second bank is bank@1
92 */
93 bank1: bank@1 {
94 st,sdram-control = /bits/ 8 <NO_COL_9 NO_ROW_12 MWIDTH_32 BANKS_4
95 CAS_2 SDCLK_3 RD_BURST_EN RD_PIPE_DL_0>;
96 st,sdram-timing = /bits/ 8 <TMRD_1 TXSR_1 TRAS_1 TRC_6 TRP_2
97 TWR_1 TRCD_1>;
98 st,sdram-refcount = <1539>;
99 };
100};