Ask questions and find answers on STM32 microprocessors, including hardware, power, DRAM, flashing, interfacing, device tree, and peripherals.
We are seeing some strange behavior on our stm32mp157 system exiting suspend mode.This is not a 'weston' build, so we enter (deep) suspend mode by executing "echo mem > /sys/power/state" and the system powers down and enters low power.root@stm32mp157...
Hi all,I am trying to bring a LVDS display up. Display: BOE EV121WXM-N10-1850. Datasheet: LinkDriving MPU : STM32MP1. I am using VisionSoM STM32MP1 based evaluation Kit. LinkThe firmware changes required to make the device up are part of git: LinkI h...
Hello all,I'm getting following error on our custom board while initializing sdmmc3 as wifi module with SDIO:~# dmesg | grep -i sdio -B 1 [ 3.410271] mmci-pl18x 48004000.sdmmc: no support for card's volts [ 3.415001] mmc0: error -22 whilst init...
In our project we are currently trying to decrease boot time and energy consumption of an embedded linux running on an STM32MP153.To improve energy consumption we are trying to activate hibernation, in order to test suspend-to-disk as well as the hyb...
Can anybody say meaning of four values in ACSR field of DDRPHYC_ACIOCR register?May ill ddr3-equipped board work more stable (i think) if I add no-zero values here...
Hi,I'm interested how to change CPU frequency from 650MHz to lower frequency. I looked those two links:https://wiki.st.com/stm32mpu/wiki/How_to_change_the_CPU_frequencyhttps://wiki.st.com/stm32mpu/wiki/Clock_device_tree_configuration_-_Bootloader_spe...
We follow this: https://wiki.st.com/stm32mpu/wiki/How_to_exchange_large_data_buffers_with_the_coprocessor_-_principle and this: https://wiki.st.com/stm32mpu/wiki/How_to_exchange_large_data_buffers_with_the_coprocessor_-_example#Linux_driversarticles...
Hello everyone!I’ve tested wake up from standby mode with Wake up pins PI11 (and PI8). But it is not work I have remove all definitions about wake up pins in dts except place where it defines as wake up pins in stm32mp151.dtsi Entering in standby mod...
my board have not use pmic and i use poweroff close the board. it will reboot and tf-a report reset reason (0x814) for NRST
We boot up the odyssey Stm32mp157c board with distribution package. While booting the display is working but when i try to run qt examples it gives core dump error. Also there is no connector or encoder in the output of modetest. I could't figure out...
