+void __init ath79_setup_ar933x_phy4_switch(bool mac, bool mdio)
+{
+ void __iomem *base;
+ u32 t;
+
+ base = ioremap(AR933X_GMAC_BASE, AR933X_GMAC_SIZE);
+
+ t = __raw_readl(base + AR933X_GMAC_REG_ETH_CFG);
+ t &= ~(AR933X_ETH_CFG_SW_PHY_SWAP | AR933X_ETH_CFG_SW_PHY_ADDR_SWAP);
+ if (mac)
+ t |= AR933X_ETH_CFG_SW_PHY_SWAP;
+ if (mdio)
+ t |= AR933X_ETH_CFG_SW_PHY_ADDR_SWAP;
+ __raw_writel(t, base + AR933X_GMAC_REG_ETH_CFG);
+
+ iounmap(base);
+}
+