AR_PHY
REG_WRITE(ah, AR_PHY(0x37), reg32);
REG_WRITE(ah, AR_PHY(0), 0x00000007);
REG_WRITE(ah, AR_PHY(0x36), 0x00007058);
REG_WRITE(ah, AR_PHY(0x20), 0x00010000);
val = (REG_READ(ah, AR_PHY(256)) >> 24) & 0xff;
REG_WRITE(ah, AR_PHY(0), 0x00000007);