AR_PHY_SPUR_REG   522 drivers/net/wireless/ath/ath9k/ar9002_phy.h #define AR_PHY_SPUR_REG          0x994c
AR_PHY_SPUR_REG    32 drivers/net/wireless/ath/ath9k/ar9003_phy.h #define AR_PHY_SPUR_REG     (AR_CHAN_BASE + 0x1c)