Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
Hi!I have a custom board with custom device tree. As far as I can say, it works (boot over emmc) but the kernel gives a trace at the start. [ 0.255543] debugfs: Directory 'cpu0' with parent 'opp' already present! [ 0.261757] Unable to get STM32...
Hi all,i'm trying to run the DDR_Init project as my first project on STM32MP135F-DK board.I loaded the project on CDT Eclipse IDE and added some configurations: the build is ok.I report the main.c compiler command line as example:Building file: C:/Pr...
Hi,i am facing the issue with the header file like I am using ADC pin where i facing the issue with kernel space programming just facing the issue with library like " consumer.h, machine.h , iio.h , and many thing ", but in Workspace i found the libr...
Hi,I have customized a board using STM32MP157DAC referencing the mp157d-disco board hardware design.I have problem when trying to flash the image in the Starter Package. The error message as below:20:55:08 : STM32CubeProgrammer API v2.17.0 | Windows-...
Hi!I having a question. I'm using STM32MP151 processor and my initrd won't work because it got stuck at the initialization of the inird inside init/main.c file inside Linux source. Follow the arrows <------ static int __ref kernel_init(void *unused)...
Hello,I want to operate the device in the following manner, but I don't fully understand the concept of the External Loader:Store DDR Init FW and Main FW in the External NOR Flash.These two FW will be downloaded to the Flash during board production.U...
Hi there, I'm trying to start my M4 fw from u-boot ( https://wiki.stmicroelectronics.cn/stm32mpu/index.php?title=How_to_start_the_coprocessor_from_the_bootloader&oldid=76509#Synchronizing_the_remote_firmware_with_Linux ). We finally managed to load t...
Hi,I'm looking at the wic file for STM32MP13 and see two metadata partitions for ATF firmware update. I'm wondering how are these partitions secured from access / modifications from non-trusted world? Since write (and optionally read) operation shoul...
I'm trying to debug a problem in my system where on rare occasions, a message gets dropped in the M4->A7 direction of RPMsg channels (M4 sends it without error and A7 never sees a message arrive). The project was started a long time ago using an olde...
Background:I'm trying to bring up a custom board with an STM32MP157D and DDR3. When I tried flashing the BSP, I got an error: "ERROR: DDR addr bus test: can't access memory @ 0xc0000004". I decided to try using STM32DDRFW-UTIL to test the DDR before ...
