#define AR9170_MAC_REG_PRETBTT (AR9170_MAC_REG_BASE + 0x524)
#define AR9170_MAC_PRETBTT_S 0
#define AR9170_MAC_PRETBTT 0x0000ffff
+#define AR9170_MAC_PRETBTT2_S 16
+#define AR9170_MAC_PRETBTT2 0xffff0000
#define AR9170_MAC_REG_MAC_ADDR_L (AR9170_MAC_REG_BASE + 0x610)
#define AR9170_MAC_REG_MAC_ADDR_H (AR9170_MAC_REG_BASE + 0x614)