SERDES_CR_CTL
while (__combo_phy_reg_read(sata_port, SERDES_CR_CTL) & CR_BUSY)
__combo_phy_reg_write(sata_port, SERDES_CR_CTL, CR_START);
__combo_phy_reg_write(sata_port, SERDES_CR_CTL, CR_WR_RDN | CR_START);