STM32 MPUs Products and hardware related
Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
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How to correctly setup PWM output in STM32MP1?
Hi everyone.I'm using a STM32MP151CAC and I have the following DTS:// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * Copyright (C) STMicroelectronics 2018 - All Rights Reserved * Author: Alexandre Torgue <alexandre.torgue@st.com>. */ /...
Has anyone successfully run Chromium on an ST32MP1 series?
I was able to build an image containing Chromium by adding meta-browser, meta-clang (dunfell branch) and meta-python2. I can verify Chromium built and was included in the image.The problem is when Chromium runs, it errors out with an error indicatin...
Porting TF-A firmware to a custom stm32mp157a board does not boot
My custom board is based on stm32mp157a-dk1,remove the pmic and usb type c circuit,My porting steps are as follows:1. porting u-boot, verify that u-boot functions properly, compile the uboot trusted image, copy u-boot.dtb to FIP_artifacts/u-boot/ an...
Secondary SSBL partition on eMMC / trusted mode
We would like to implement a dual partitioning system and I am trying to find out if it is possible to have a secondary SSBL (u-boot) partition in trusted mode (eMMC).I don't see any problems for bootfs, vendorfs, rootfs and userfs. FSBL is already r...
Are series resistors required on ddr address line?
I have a STM32MP157D-DK1 board. I downloaded design files and surprisingly found there were 56ohm series resistors on ddr address lines. Though series resistors are normally found on data and address lines for ddr1 or ddr2, I have never seen them use...
Resolved! Shared/common time (domain) between A7 and M4
Hi,I wanted to ask if there is a possibility to have the same time domain on the M4 and A7 cores?To be a bit more specific: my STM32MP1 board synchronises time over Ethernet using PTP (and that works great!) but now i want to timestamp a digital inpu...
Resolved! Some question about RPMSG in STM32MP1
1. When I create an openamp-based virtual_huart0 on the M4 side for exchanging information，some code is as follows：if (VIRT_UART_Init(&huart1) != VIRT_UART_OK) { printf("VIRT_UART_Init UART1 failed.\r\n"); Error_Handler(); } VIRT_UART_Status...
stm32-dmamux 48002000.dma-router: Run out of free DMA requests
Hi,I've noticed when booting one of our board designs with a STM32MP157C in openstlinux-5.4-dunfell-mp1-20-11-12 with Weston Wayland under the STM32MP157-Ecosystem-v2.1.0 that multiple times when the kernel is loading I'll see the message "stm32-dmam...
How to add pwm-backlight to timer block?
Similar question was asked here:https://community.st.com/s/question/0D50X0000AvgWuG/how-to-use-timers2-as-pwmbacklightBut this does not work on v5.4 kernel anymore. So a working example would be nice as pwm-backlight device tree handling is not docum...
