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/*
* Copyright 2017 - Patrice Chotard <patrice.chotard@st.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
#include "stm32h743.dtsi"
#include "stm32h743-pinctrl.dtsi"
#include <dt-bindings/memory/stm32-sdram.h>
/ {
model = "STMicroelectronics STM32H743i-Discovery board";
compatible = "st,stm32h743i-disco", "st,stm32h743";
chosen {
bootargs = "root=/dev/ram";
stdout-path = "serial0:115200n8";
};
memory {
reg = <0xd0000000 0x2000000>;
};
aliases {
serial0 = &usart2;
gpio0 = &gpioa;
gpio1 = &gpiob;
gpio2 = &gpioc;
gpio3 = &gpiod;
gpio4 = &gpioe;
gpio5 = &gpiof;
gpio6 = &gpiog;
gpio7 = &gpioh;
gpio8 = &gpioi;
gpio9 = &gpioj;
gpio10 = &gpiok;
};
};
&usart2 {
pinctrl-0 = <&usart2_pins>;
pinctrl-names = "default";
status = "okay";
};
&fmc {
pinctrl-0 = <&fmc_pins>;
pinctrl-names = "default";
status = "okay";
/*
* Memory configuration from sdram datasheet IS42S32800G-6BLI
* firsct bank is bank@0
* second bank is bank@1
*/
bank1: bank@1 {
st,sdram-control = /bits/ 8 <NO_COL_9 NO_ROW_12 MWIDTH_32 BANKS_4
CAS_2 SDCLK_3 RD_BURST_EN RD_PIPE_DL_0>;
st,sdram-timing = /bits/ 8 <TMRD_1 TXSR_1 TRAS_1 TRC_6 TRP_2
TWR_1 TRCD_1>;
st,sdram-refcount = <1539>;
};
};
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