Want to turn off thermal shutdown at 120C on STM32MP157A-DK1 to test it at higher temperatures

[ACard.1]

Hello,

I would like to disable the thermal shutdown at 120C on STM32MP157A-DK1 which embeds a STM32MP157A. It runs Yocto Project and contrary to other boards I worked on, I cannot turn off and even change the critical temperature (the procedure is the same on other boards it succeeded) so the board is turning off itself.

Any help is welcome. Thank you

[Olivier GALLIEN]

Hi @ACard.1​ ,

Be aware that above this temperature electrical characteristics and lifetime estimation provided by ST are no more valid.

There is also a risk of thermal runaway and destruction of sample.

read Thermal management guidelines for STM32 applications - Application note ,

STM32MP1 Series lifetime estimates - Application note

and Datasheet - STM32MP157A/D - Arm<Sup>®</Sup> dual Cortex<Sup>®</Sup>-A7 800 MHz + Cortex<Sup>®</Sup>-M4 MPU, 3D GPU, TFT/DSI, 37 comm. interfaces, 29 timers, adv. analog

"The temperature monitor can be enabled/disabled with MONEN bit in PWR control register 2 (PWR_CR2)."

Olivier