Resolved! Can't build u-boot. No u-boot output files after build without errors.
Followed thishttps://wiki.st.com/stm32mpu/wiki/STM32MP1_Developer_Package#Starting_up_the_SDKand thishttps://wiki.st.com/stm32mpu/nsfr_img_auth.php/5/57/U-Boot.README.HOW_TO.txtat:make stm32mp15_trusted_defconfigmake DEVICE_TREE=stm32mp157c-dk2 allbu...