AHCI_PHYCS1R
ahci_set(ctlr->r_mem, AHCI_PHYCS1R, PHYCS1R_HIGHZ);
ahci_mask_set(ctlr->r_mem, AHCI_PHYCS1R,
ahci_set(ctlr->r_mem, AHCI_PHYCS1R, PHYCS1R_BIT15 | PHYCS1R_BIT28);
ahci_clr(ctlr->r_mem, AHCI_PHYCS1R, PHYCS1R_HIGHZ);