[Uboot-stm32] [PATCH] board: stm32pm1: Fix board_check_usb_power()

[Raphaël Gallais-Pou]

On 4/14/26 11:06, Patrice Chotard wrote:
> 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 at foss.st.com>
> ---

Hi Patrice,

Reviewed-by: Raphaël Gallais-Pou <rgallaispou at gmail.com>

Best regards,
Raph