EXPCAP
val = rcar_pci_read_reg(pcie, EXPCAP(1));
rcar_pci_write_reg(pcie, val, EXPCAP(1));
val = rcar_pci_read_reg(pcie, EXPCAP(2));
rcar_pci_write_reg(pcie, val, EXPCAP(2));
rcar_rmw32(pcie, EXPCAP(12), PCI_EXP_LNKSTA_CLS,
rcar_rmw32(pcie, EXPCAP(12), PCI_EXP_LNKSTA_CLS,
#define REXPCAP(x) (EXPCAP(0) + (x))