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imx6ul dual ethernet mdio on fec1issue

Question asked by Blackrose on Jul 11, 2017
Latest reply on Jul 25, 2017 by Carlos_Musich

Dear all:


I use imx6ul chip on our custom board.I reference the imx6ulevk board sch and code, the mdio on fec2.In this case, the fec2 is eth0, fec1 is eth1.Now, i config the mdio on fec1 pinctrl.But the eth0 and eth1 always show device not found.And i know the mdio is share with fec1 and fec2.


I search an patch for imx28, it said use FEC_QUIRK_SINGLE_MDIO can use mdio on fec1 or fec2 anytime.I try it, but failed.Here is the patch url:

[PATCH v2] net: fec: fix MDIO bus assignement for dual fec SoC's 


Is it the fec driver can not support mdio on fec1 at dual ethernet case?