MACCTLR
rcar_pci_write_reg(&ep->pcie, MACCTLR_INIT_VAL, MACCTLR);
rcar_pci_write_reg(pcie, MACCTLR_INIT_VAL, MACCTLR);
if (rcar_pci_read_reg(pcie, MACCTLR) & SPEED_CHANGE) {
rcar_rmw32(pcie, MACCTLR, SPEED_CHANGE, SPEED_CHANGE);
rcar_pci_write_reg(pcie, MACCTLR_INIT_VAL, MACCTLR);