Hi , we are using STM32MP157 and want to enable the USB1 port for connecting the peripheral. Can i get some reference on this ??, there are lot of reference for USB2 OTG port but could find much on USB (ehci) port 1.

[rahuj.1]

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[PatrickF]

Hi @rahuj.1​ 

USBH could use port0(USB_DP1/DM1 pins), this is the case on our EV1 and DK2 boards, and in addition also on port1 (USB_DP2/DM2 pins).

Please refer to https://wiki.st.com/stm32mpu/wiki/USBH_device_tree_configuration#DT_configuration_when_using_port0

or

https://wiki.st.com/stm32mpu/wiki/USBH_device_tree_configuration#DT_configuration_when_using_the_two_physical_ports

Note that OTG cannot be 'routed' on port0 (USB_DP1/DM1 pins). OTG high-speed is only possible on port1 (USB_DP2/USBDM2 pins) which is mandatory for flashload (e.g. with CubeProgrammer)

For possible HW choices around USB, please refer to AN5031.

Regards,

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[rahuj.1]

thanks @PatrickF​ . this was really helpful

[PatrickF]

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