arswitch_writemmd
arswitch_writemmd(sc->sc_dev, phy, 0x7, 0x3c);
arswitch_writemmd(sc->sc_dev, phy, 0x4007, 0x0);
arswitch_writemmd(sc->sc_dev, phy, 0x3, 0x800d);
arswitch_writemmd(sc->sc_dev, phy, 0x4003, 0x803f);
extern void arswitch_writemmd(device_t dev, int phy, uint16_t dbg_addr,