+/* 0x598 --> 0x5a0 unused */
+#define MAC_PHYCFG1 0x000005a0
+#define MAC_PHYCFG1_RGMII_INT 0x00000001
+#define MAC_PHYCFG1_RGMII_EXT_RX_DEC 0x02000000
+#define MAC_PHYCFG1_RGMII_SND_STAT_EN 0x04000000
+#define MAC_PHYCFG1_TXC_DRV 0x20000000
+#define MAC_PHYCFG2 0x000005a4
+#define MAC_PHYCFG2_INBAND_ENABLE 0x00000001
+#define MAC_EXT_RGMII_MODE 0x000005a8
+#define MAC_RGMII_MODE_TX_ENABLE 0x00000001
+#define MAC_RGMII_MODE_TX_LOWPWR 0x00000002
+#define MAC_RGMII_MODE_TX_RESET 0x00000004
+#define MAC_RGMII_MODE_RX_INT_B 0x00000100
+#define MAC_RGMII_MODE_RX_QUALITY 0x00000200
+#define MAC_RGMII_MODE_RX_ACTIVITY 0x00000400
+#define MAC_RGMII_MODE_RX_ENG_DET 0x00000800
+/* 0x5ac --> 0x5b0 unused */