I am using K70 tower board and MQX for my project. I was using the serial board's micrel ksz8041 chip as my phy driver. i have replaced the LAN IC from Micrel to Microchip's LAN9303. Now I want to add the LAN9303 phy driver to MQX and test its ping functionality. Any help on integrating a custom phy driver into MQX is appreciated.