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a1e384b4d9
This patch adapts stm32h743 disco and eval dts files to match with U-boot requirements or add features wich are not yet upstreamed on kernel side : _ Add RCC clock driver node and update all clocks phandle accordingly. By default, on kernel side, all clocks was temporarly configured as a phandle to timer_clk waiting for a RCC clock driver to be available. On U-boot side, we now have a dedicated RCC clock driver, we can configured all clocks as phandle to this driver. All this binding update will be available soon in a kernel tag, as all the bindings have been acked by Rob Herring [1]. [1] http://lkml.iu.edu/hypermail/linux/kernel/1704.0/00935.html _ Align STM32H7 serial compatible string with the one which will be available in next kernel tag. The bindings has been acked by Rob Herring [2]. This compatible string will be usefull to add stm32h7 specific feature for this serial driver. [2] https://lkml.org/lkml/2017/7/17/739 _ Add gpio compatible and aliases for stm32h743 _ Add FMC sdram node with associated new bindings value to manage second bank (ie bank 1). _ Add missing HSI and CSI oscillators nodes needed by STM32H7 RCC clock driver. Clock sources could be: _ HSE (High Speed External) _ HSI (High Speed Internal) _ CSI (Low Power Internal) These clocks can be used as clocksource in some configuration. By default, HSE is selected as clock source. _ Set HSE to 25Mhz for stm32h743i-disco and eval board By default, the external oscillator frequency is defined at 25 Mhz in SoC stm32h743.dtsi file. It has been set at 125 Mhz in kernel DT temporarly waiting for RCC clock driver becomes available. As in U-boot we got a RCC clock driver, the real value of HSE clock can be used. _ Add "u-boot,dm-pre-reloc" for rcc, fmc, fixed-clock, pinctrl, pwrcfg and gpio nodes. Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>
100 lines
3.1 KiB
Text
100 lines
3.1 KiB
Text
/*
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* Copyright 2017 - Alexandre Torgue <alexandre.torgue@st.com>
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*
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* This file is dual-licensed: you can use it either under the terms
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* of the GPL or the X11 license, at your option. Note that this dual
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* licensing only applies to this file, and not this project as a
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* whole.
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*
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* a) This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Or, alternatively,
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*
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* b) Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/dts-v1/;
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#include "stm32h743.dtsi"
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#include "stm32h743-pinctrl.dtsi"
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#include <dt-bindings/memory/stm32-sdram.h>
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/ {
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model = "STMicroelectronics STM32H743i-EVAL board";
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compatible = "st,stm32h743i-eval", "st,stm32h743";
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chosen {
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bootargs = "root=/dev/ram";
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stdout-path = "serial0:115200n8";
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};
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memory {
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reg = <0xd0000000 0x2000000>;
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};
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aliases {
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serial0 = &usart1;
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gpio0 = &gpioa;
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gpio1 = &gpiob;
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gpio2 = &gpioc;
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gpio3 = &gpiod;
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gpio4 = &gpioe;
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gpio5 = &gpiof;
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gpio6 = &gpiog;
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gpio7 = &gpioh;
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gpio8 = &gpioi;
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gpio9 = &gpioj;
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gpio10 = &gpiok;
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};
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};
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&usart1 {
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pinctrl-0 = <&usart1_pins>;
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pinctrl-names = "default";
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status = "okay";
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};
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&fmc {
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pinctrl-0 = <&fmc_pins>;
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pinctrl-names = "default";
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status = "okay";
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/*
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* Memory configuration from sdram datasheet IS42S32800G-6BLI
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* firsct bank is bank@0
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* second bank is bank@1
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*/
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bank2: bank@1 {
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st,sdram-control = /bits/ 8 <NO_COL_9 NO_ROW_12 MWIDTH_32 BANKS_4
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CAS_2 SDCLK_3 RD_BURST_EN RD_PIPE_DL_0>;
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st,sdram-timing = /bits/ 8 <TMRD_1 TXSR_1 TRAS_1 TRC_6 TRP_2
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TWR_1 TRCD_1>;
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st,sdram-refcount = <1539>;
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};
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};
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