STM32 MPUs Products and hardware related

Hello, I would like to know how is it possible to tell the A7 that we are waiting for a wake-up call by Gpio. Then, how do we wake it up via a gpio? I thank you cordially

STANDBY exit TF-A error STM32MP157

My board with stm32mp157 wakes up from CSTOP with UART wake source, but cannot wakes with RTC or WAKEUP PINs from STANDBY. TF-A outputs strange errors at the end:ERROR:  Illegal access to 0xe0000000 in :ERROR:     Non-SecureERROR:     PrivilegeERROR...

How to map peripheral memory on stm32mp157c

I'm developing an IoT device for a customer and I have an external Bluetooth SoC connected to the ST's MCU via UART. The BT SoC shares its UART Tx pin with reset functionality so I need to develop a driver to momentarily turn the UART to GPIO mode to...

How to control a GPIO in TF-A ?

I want to control a GPIO before u-boot, so how to control in TF-A?

Minimal OpenSTLinux

We are building a custom embedded system based on STM32MP1 using customised OpenSTLinux. We are currently using the st-image-core as a starting point but we found it already heavy.Is there any option or other images providing a smaller image ?Also h...

Location of generated dtb file.

Hi,I am trying to develop something around the STM32MP1.For that I have made some changes in the dts file via cubeMx and followed the process of building it given here.What is the location where the dtb file generated ? My arch/arm/boot/dts folder lo...

STM32mp1 pin mux in kernel dts

currently i have a pin <STM32_PINMUX('F', 14, GPIO)> how to mux as a GPIO before using as a gpiolib, export work fine, but i2c4 is not working but i can see GPIO is getting based on sys gpiolib. as before export i see PF14 line is muxed as pin 94 (P...