AHCI_PHYCS2R
sunxi_clrsetbits(reg_base + AHCI_PHYCS2R,
sunxi_setbits(reg_base + AHCI_PHYCS2R, (0x1 << 24));
reg_val = sunxi_getbits(reg_base + AHCI_PHYCS2R, 0x1, 24);