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boards: st: add initial support for the stm32h757i eval board
Add initial support for the STM32H757I-EVAL board. Largely based on the STM32H747I-DISCO board Signed-off-by: Tomas Groth Christensen <tgc@foss.dk>
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‎boards/shields/st_b_lcd40_dsi1_mb1166/boards/st_b_lcd40_dsi1_mb1166/stm32h757i_eval_stm32h757xx_m7.conf

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# Copyright (c) 2023 bytes at work AG
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# Copyright (c) 2024 Erik Andersson <erian747@gmail.com>
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# Copyright (c) 2025 Foss Analytical A/S
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# SPDX-License-Identifier: Apache-2.0
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# Initialize after LTDC and MIPI-DSI
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CONFIG_DISPLAY_OTM8009A_INIT_PRIORITY=87

‎boards/shields/st_b_lcd40_dsi1_mb1166/boards/stm32h757i_eval_stm32h757xx_m7.conf

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# Copyright (c) 2023 bytes at work AG
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# Copyright (c) 2025 Foss Analytical A/S
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_MEMC=y
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CONFIG_STM32_LTDC_ARGB8888=y

‎boards/shields/st_b_lcd40_dsi1_mb1166/boards/stm32h757i_eval_stm32h757xx_m7.defconfig

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# Copyright (c) 2024 Linumiz
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# Copyright (c) 2025 Foss Analytical A/S
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_STM32H757I_EVAL_STM32H757XX_M7
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if LVGL
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# Double frame buffer maintained by lvgl.
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config STM32_LTDC_FB_NUM
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default 0
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config LV_Z_DOUBLE_VDB
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default y
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config LV_Z_VDB_CUSTOM_SECTION
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default y
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config LV_Z_FULL_REFRESH
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default y
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endif # LVGL
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endif # BOARD_STM32H757I_EVAL_STM32H757XX_M7

‎boards/shields/st_b_lcd40_dsi1_mb1166/boards/stm32h757i_eval_stm32h757xx_m7.overlay

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/*
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* Copyright (c) 2023 bytes at work AG
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* Copyright (c) 2025 Foss Analytical A/S
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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&sdram2 {
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/* Frame buffer memory when cached causes screen flickering. */
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zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE) )>;
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};
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&zephyr_lcd_controller {
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status = "okay";
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ext-sdram = <&sdram2>;
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def-back-color-red = <0>;
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def-back-color-green = <0>;
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def-back-color-blue = <0>;
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};
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/* ltdc uses pll3_r as pixel clock */
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&pll3 {
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status = "okay";
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clocks = <&clk_hse>;
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div-m = <5>;
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mul-n = <132>;
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div-p = <2>;
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div-q = <2>;
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div-r = <24>; /* 27.5 MHz */
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};
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&zephyr_mipi_dsi {
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status = "okay";
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/* DSI HOST dedicated PLL
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* F_VCO = CLK_IN / pll-idf * 2 * pll-ndiv
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* PHI = F_VCO / 2 / (1 << pll-odf) = lane_byte_clk
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* = 25 MHz / 5 * 2 * 100 / 2 / (1<<0) / 8 = 62.5 MHz
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*/
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pll-ndiv = <100>;
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pll-idf = <5>;
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pll-odf = <0>;
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vs-active-high;
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hs-active-high;
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de-active-high;
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};

‎boards/st/stm32h747i_disco/stm32h747i_disco_stm32h747xx_m7.dts

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};
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};
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&mac {
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/*
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* From UM2411 Rev 4:
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* With the default setting, the Ethernet feature is not working due
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* of a pin conflict between ETH_MDC and SAI4_D1 of the MEMs digital
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* microphone.
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* Cf Ethernet section in board documentation for more information on
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* the hw modification to be done to enable it.
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*/
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&enet_mac {
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status = "okay";
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pinctrl-0 = <&eth_ref_clk_pa1
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&eth_crs_dv_pa7
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&eth_txd0_pg13
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&eth_txd1_pg12>;
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pinctrl-names = "default";
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phy-connection-type = "rmii"
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};
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&mdio {
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&enet_mdio {
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status = "okay";
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pinctrl-0 = <&eth_mdio_pa2 &eth_mdc_pc1>;
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pinctrl-names = "default";

‎boards/st/stm32h757i_eval/CMakeLists.txt

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#
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# Copyright 2023 BrainCo Inc.
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# Copyright (c) 2025 Foss Analytical A/S
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Add custom linker section to relocate framebuffers to PSRAM
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zephyr_linker_sources_ifdef(CONFIG_LV_Z_VDB_CUSTOM_SECTION
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SECTIONS dc_ram.ld)

‎boards/st/stm32h757i_eval/Kconfig.defconfig

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# STM32H757I EVAL board configuration
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# Copyright (c) 2019 Linaro Limited
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# Copyright (c) 2025 Foss Analytical A/S
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_STM32H757I_EVAL
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if NETWORKING
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config NET_L2_ETHERNET
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default y
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endif # NETWORKING
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config DISK_DRIVER_SDMMC
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default y if DISK_DRIVERS
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endif # BOARD_STM32H757I_EVAL

‎boards/st/stm32h757i_eval/Kconfig.stm32h757i_eval

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# STM32H757I EVAL board configuration
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# Copyright (c) 2019 Linaro Limited
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# Copyright (c) 2025 Foss Analytical A/S
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_STM32H757I_EVAL
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select SOC_STM32H757XX_M7 if BOARD_STM32H757I_EVAL_STM32H757XX_M7
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select SOC_STM32H757XX_M4 if BOARD_STM32H757I_EVAL_STM32H757XX_M4

‎boards/st/stm32h757i_eval/board.cmake

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# SPDX-License-Identifier: Apache-2.0
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# Copyright (c) 2019 STMicroelectronics
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# Copyright (c) 2025 Foss Analytical A/S
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# keep first
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board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")
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if(CONFIG_BOARD_STM32H757I_EVAL_STM32H757XX_M7)
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board_runner_args(jlink "--device=STM32H757XI")
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board_runner_args(openocd "--config=${BOARD_DIR}/support/openocd_stm32h757i_eval_m7.cfg")
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board_runner_args(openocd --target-handle=_CHIPNAME.cpu0)
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elseif(CONFIG_BOARD_STM32H757I_EVAL_STM32H757XX_M4)
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board_runner_args(jlink "--device=STM32H757XI_M4")
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board_runner_args(openocd "--config=${BOARD_DIR}/support/openocd_stm32h757i_eval_m4.cfg")
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board_runner_args(openocd --target-handle=_CHIPNAME.cpu1)
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endif()
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# keep first
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include(${ZEPHYR_BASE}/boards/common/stm32cubeprogrammer.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

‎boards/st/stm32h757i_eval/board.yml

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board:
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name: stm32h757i_eval
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full_name: STM32H757I Eval
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vendor: st
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socs:
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- name: stm32h757xx

‎boards/st/stm32h757i_eval/dc_ram.ld

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/*
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* Copyright (c) 2023 BrainCo Inc.
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* Copyright (c) 2025 Foss Analytical A/S
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#if DT_NODE_HAS_STATUS(DT_NODELABEL(sdram2), okay)
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GROUP_START(SDRAM2)
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SECTION_PROLOGUE(_STM32_SDRAM2_SECTION_NAME, (NOLOAD),)
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{
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*(.lvgl_buf)
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} GROUP_LINK_IN(SDRAM2)
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GROUP_END(SDRAM2)
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#endif

‎boards/st/stm32h757i_eval/doc/img/stm32h757i_eval.webp

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