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IMX6UL - RMII to marvell switch

Question asked by Pieter Cardoen on Nov 18, 2016
Latest reply on Dec 1, 2016 by Pieter Cardoen



I am trying to start a custom board with a marvell mv88e6171 switch connected via RMII to the imx6ul controller. The TX clock is provided by the switch towards the imx6ul controller. I've configured the imx6ul to use an external clock for the TX clock (GPR1 bits 17 and 13). The clock is 50 MHz. If I measure the data on ENET1_TXDATA0/1, It seems that the data is clocked out at a 5MHz rate. What could be the reason of this?


PS. The network communication is not yet working.


Best regards

Pieter Cardoen