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STM32MP257F-DK OTG failed to connect iPhone 14

dothanhtrung
Associate

Hi.

 

I am trying to connect iPhone 14 (lightning port) to OTG (CN15) on STM32MP257F-DK, but there is no connection.

  • iPhone 14 is not charged. No USB connection is shown on iPhone.
  • On the board:
    • `lsusb` does not show any new connection.
    • `dmesg` does not show any new log, like there is no new cable plugged at all.

The lightning-to-C cable has been tested with other devices and works fine.

iPhone 16 (type-C port) can connect to OTG to be charged and do USB tethering just fine.

I am already using the newest kernel 6.6.78 from https://github.com/STMicroelectronics/linux, branch "v6.6-stm32mp".


So I would like to confirm if OTG on STM32MP257F-DK support lightning connection or not.

 

Thank you.

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