About SScar.2

SScar.2 · 2024-09-09

Hi, I have a custom board based on a STM32MP153 and I'm trying to reduce CPU (MPU) max frequency... Now it's running at 650Mhz, which is the default configuration. looking at the Wiki : https://wiki.st.com/stm32mpu/wiki/How_to_change_the_CPU_frequenc...

SScar.2 · 2024-07-30

Hi there, I'm trying to start my M4 fw from u-boot ( https://wiki.stmicroelectronics.cn/stm32mpu/index.php?title=How_to_start_the_coprocessor_from_the_bootloader&oldid=76509#Synchronizing_the_remote_firmware_with_Linux ). We finally managed to load t...

SScar.2 · 2024-05-31

Hi there, I'm using a custom STM32MP153 board with OpenSTLinux distribution (5.15.24) on it, and I have a problem with the Wake UP. I successfully set PWR gpio to wake up from low power modes. In fact, I can successfully wake from CSleep and CStop m...

SScar.2 · 2024-05-27

Hi there, I'm trying to configure a CubeMX project, starting from scratch, for a custom board based on a STM32MP153CAC3. And I'm having an issue with the MPU clock setting. In particular, I can't select any MPU Clock Mux option and see the PLL1 tree ...

SScar.2 · 2024-05-24

Hi, I'm trying to change the value of the register RCC_RDLSICR (RCC reset duration and LSI control register, address offset 0x144). I need to change the Minimum Reset Duration value.In all power management/low power handling manuals for STM32MP15x li...

SScar.2 · 2024-09-24

I think I found a workaround: I add this entry in all custom .dts files (device tree exported from CubeMX for my custom board): //try opp table custom&cpu0_opp_table { opp-650000000 { opp-hz = /bits/ 64 <350000000>; //test 350 Mhz opp-microvolt = ...

SScar.2 · 2024-08-29

SOLVED HERE: https://community.st.com/t5/stm32-mpus-other-tools/synchronizing-earyl-booted-m4-fw-with-linux/m-p/714210/highlight/true#M311 IMPORTANT NOTE: RPMSG wasn't working because there were issues in the resource table initialization from uboot...

SScar.2 · 2024-08-29

Solved here!!! kinda.... https://community.st.com/t5/stm32-mpus-products/reallocation-of-sram-memory-to-stm32mp157a/td-p/194890 using this memory reallocation worked for me. In a nutshell: Probably my M4 custom firmware was too big, and memory addres...

SScar.2 · 2024-08-01

Hi there! I'm in the same situation one year later... From your solution I couldn't implement what you're suggesting :\ Could you please explain what did you do to achieve the correct functionality of the fw synchronization? Thank you so much

SScar.2 · 2024-06-13

Hi @PatrickF , you were right. A hardware problem on the board prevented the RSTn signal from moving properly. Btw, let's let a trace of the tf-a patch in this thread, there are not many examples on the internet. Cheers

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STM32MP153, How to change CPU frequency?

Load Cortex-M4 firmware from u-boot and use RPMesg interface synchronization?

STM32MP153 Can't wake up from CStandby

stm32mp153 - CubeMX - mpu clock mux not editable

How to write STM32MP153 registers (RCC_RDLSICR)?

Re: STM32MP153, How to change CPU frequency?

Re: Load Cortex-M4 firmware from u-boot and use RPMesg interface synchronization?

Re: Synchronizing earyl booted M4 FW with Linux:

Re: Synchronizing earyl booted M4 FW with Linux:

Re: How to write STM32MP153 registers (RCC_RDLSICR)?