Alternate function ETH1_PHY_INTN from STM32mp15c

[AVazquez]

Hi!

I have been reviewing the datasheet for the stm32mp157c and have seen that GPIO PG12 can be configured in a special function "ETH1_PHY_INTN"

I would like to get more information about this mode, as it might be interesting to use it in future designs.

I have been examining in the device tree of some of the kit based on this mpu and I haven't seen this GPIO(PG12) being used with this special mode.

Thanks!

 

[PatrickF]

Hi @AVazquez 

Our Linux driver does not use HW interrupt but rather GPIO polling (to get link status) and/or thru EXTI for WakeOnLan on some boards.
In all cases, interrupt line from PHY is not used during data transfer, so polling is not impacting Ethernet performances.

Regards.