We're in the process of upgrading our custom board software to STM32MPU-Ecosystem-v6.0.0, using Buildroot as our build system (buildroot-external-st st/2024.02.9).
Our device uses standby mode for low-power operation, and we rely on RTC wakeup and buttons connected to three wakeup pins (PI1, PI2, and PI3) to resume the system.
We followed the same procedure as with STM32MPU-Ecosystem-v5, applying the same configuration changes. While we are able to enter standby mode successfully, we are facing issues with resuming from it. Debug logs do not show any errors.
We’ve included our OP-TEE and Linux device tree files below.
Could you help us identify if there’s anything missing or incorrect in our configuration?
