STM32 MPUs Products

Resolved! u-boot on custom board will not use boot_device=mmc

We have a custom board based on the stm32mp151 that shall boot from emmc. I can flash alright, but when I switch the boot pins, the boot device remains on usb. I can see from arch/arm/mach-stm32mp/cpu.c, that boot_device is set to usb, here is the de...

Resolved! DDR tuning fails Bit Deskew and Eye Training

I'm DDR tuning a custom STM32MP157F board with 4GB DDR3. All DDR tests are passing however I get the following tuning failure for Bit Deskew: Failed [Cannot Deskew lines, there is no PASS region] and Eye Training: [Cannot DQS timings, there is no PA...

Resolved! I've come across the chip ID caveat mentioned in the op-tee documentation for secure storage. Are unique chip IDs implemented in STs branch of the op-tee OS? Also is trustzone code itself stored securely at rest or only the data in secure storage? Thanks

Full text from op-tee: Important caveats Currently no OP-TEE platform is able to support retrieval of the Hardware Unique Key or Chip ID required for secure operation.   For all platforms, a constant key is used, resulting in no protection against de...

Resolved! Can ST-LINK/V2 run in DFU mode or is that something special about the dev board?

Resolved! I want to power the STM32MP157 card by the + 5V of the CN2 connector to integrate the card on a motherboard of a control system. The card does not boot if power is supplied from CN2.

Only the power supply via USB C CN6 allows booting with detection of the presence of voltage on GPIO PA5 and PA4. Is there a way to modify this control mode and be able to boot with a CN2 power supply? Is it possible to modify the FW so as not to re...

Resolved! How to customize openstlinux boot screen (psplash)

I am evaluate the STM32MP157C-DV2 board.I have disabled the weston service by referring to the link below.https://community.st.com/s/question/0D53W00000cSKmXSAW/disable-weston-autostart-in-stm32mp157cdv2​When boot with the weston service disabledThe ...