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Depending of plugged power source (computer, wall charger, ...) it can happen that we got the following message: "****************************************************" "* USB TYPE-C charger not compliant with *" "* specification *" "****************************************************" " " "### ERROR ### Please RESET the board ### " This issue has been detected on STM32MP135f-DK board. It's due to max_uV and min_uV value are initialized at beginning of board_check_usb_power() and can then be used for the 2 iteration of adc_measurement(). max_uV/min_uV values issued of the first adc_measurement() iteration are used as input of the second adc_measurement() iteration, which can lead to incoherent pair of min_uV/max_uV values. To ensure that adc_measurement() returns coherent value for max_uV and min_uV, initialize max_uV and min_uV at each loop start. Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>