Hi:Dear friends, there is a very strange problem here. I use timer 1(STM32MP157AAC) to output PWM wave. In engineering mode, the output of PWM wave is normal, but when it comes to mass production mode, the waveform is interrupted. Here are my configu...

I want to use stm32mp1 chip to drive ssd22288 rgb-mipi screen. Could you give me some solutions?

Hi:When I do not enable sdmmc1 in the device tree , a null pointer error will appear, as follows: Unable to handle kernel NULL pointer dereference at virtual address 00000020[  4.406546] pgd = b1eff48d[  4.409244] [00000020] *pgd=00000000[  4.412826]...

Hi：​I encountered a strange problem when I compiled TF source code separately to generate xxserialboot.stm32 File, but found that there are always errors? ​eg:make -f $PWD/../Makefile.sdk TFA_DEVICETREE=stm32mp157c-dk2 TF_A_CONFIG=serialboot ELF_DEBU...

Hi: I encountered a strange problem when I tried to operate the gpioz pin with the gpioset command in user space and found that the level never changed. Can you give some suggestions to solve it.