Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
We are using ST32MP153 running mainline linux on the A7 cores. And we want to use the M4 for realtime processing and output. Therefore some resources shall be used by Linux at the A7 cores. Some by the M4. If we get it right, ST's solution for that i...
Hi Team,We are trying to boot the STM32MP157A-EV1 board with our eMMC device, but it is booting intermittently.As per our debugging the failure case, eMMC device will respond ACK within ~15ms but ROM code disable the CLK in ~50ms(before downloading t...
Board: STM32MP157F-DK2Distro: st-image-weston with kernel 5.15.67 (Starter Package)root@stm32mp1:~# modprobe rpmsg_tty root@stm32mp1:~# modprobe rpmsg_char root@stm32mp1:~# lsmod | grep rpm rpmsg_char 16384 0 rpmsg_tty 16384...
Hi,my situation is this:We want to use a "liveSD" image and boot from emmc by default if "liveSD" isn't found.The SD card should be inserted even if it is not a "liveSD" card, boot eMMC should be running.I know we could override the OTP boot sequence...
I am testing lan by connecting usb ethernet (LAN7850) to stm32mp157f-dk2 board.Drivers microchip.ko and lan78xx.ko are loaded automatically and device eth1 appears normally.But when I connect or remove the cable to the lan port it doesn't recognize i...
I'm now trying to read OTP 13~15 from remoteproc driver to enc/decrypt m4 firmware.From NVMEM overview. I learn below informationOTP 13~15 are non-secured areaThe name of device is "stm32-romem0"NVMEM kernel APII can successfully get OTP 13~15 from ...
Hi, I would like to set all 8 pins in port Z to unsecure so i use these pins as other ports. I read data sheet portz is set to secure mode as default after reset. And I tried write into it and system crashed.Thanks
I am currently developing using STM32mp157fad and have a question. Here are the steps I have taken:Used STM32CubeProgrammer to upload the stm32mp157f-ev1 image to an SD card.Used STM32CubeMX to configure the GPIOs to be used with stm32mp157fad, gener...
I am using UART over RS-485 on an STM32MP153AAB3.The communication fails because the actual baudrate is off from the specified baudrate. With a specified baudrate of 9600 Bits/s, I am getting an actual baudrate of 9970 Bits/s, as you can see here (ti...
Hello, I use Optee on a stm32mp157f-dk2 board, version is the and the corresponding BSP :optee-os 3.16.0-stm32mpu-boot v2021.10-stm32mpLinux v5.15-stm32mpAll my changes are committed and built using a yocto meta-layer : https://github.com/embetrix/m...
