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I want to power the STM32MP157 card by the + 5V of the CN2 connector to integrate the card on a motherboard of a control system. The card does not boot if power is supplied from CN2.

PFUMA.1
Associate

Only the power supply via USB C CN6 allows booting with detection of the presence of voltage on GPIO PA5 and PA4. Is there a way to modify this control mode and be able to boot with a CN2 power supply? Is it possible to modify the FW so as not to read the two GPIOs ? Thank for help.

1 ACCEPTED SOLUTION

Accepted Solutions
PatrickF
ST Employee

Hi,

I think removing this property in uBoot Device Tree would be enough.

   		st,adc_usb_pd = <&adc1 18>, <&adc1 19>;

See https://wiki.st.com/stm32mpu/wiki/How_to_configure_U-Boot_for_your_board#Config_node

Regards.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.

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2 REPLIES 2
PatrickF
ST Employee

Hi,

I think removing this property in uBoot Device Tree would be enough.

   		st,adc_usb_pd = <&adc1 18>, <&adc1 19>;

See https://wiki.st.com/stm32mpu/wiki/How_to_configure_U-Boot_for_your_board#Config_node

Regards.

In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
PFUMA.1
Associate

Thanks !