#define MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW 0x6
#define MII_KSZ9031_EXT_RGMII_CLOCK_SKEW 0x8
+#define MII_KSZ9031_FLP_BURST_TX_LO 0x3
+#define MII_KSZ9031_FLP_BURST_TX_HI 0x4
+
+#define MII_KSZ9x31_SILICON_REV_MASK 0xfffff0
+
+#define PHY_ID_KSZ9031 0x00221620
+
+
/* Registers */
#define MMD_ACCESS_CONTROL 0xd
#define MMD_ACCESS_REG_DATA 0xe