The instructions in the readme use incorrect connector names. See also the official devkit documentation: https://wiki.st.com/stm32mpu/wiki/Getting_started/STM32MP1_boards/STM32MP135x-DK/Let%27s_start/Unpack_the_STM32MP135x-DK_board#Out-of-the-box_kit Also the board does not show the console on the screen. This may have been a copy & paste oversight from the STM32MP157 readme. Signed-off-by: Gero Schwäricke <gero.schwaericke@sevenlab.de> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>