RZG3S_PCI_PCSTAT2
cs2 = readl_relaxed(host->axi + RZG3S_PCI_PCSTAT2);
ret = readl_poll_timeout(host->axi + RZG3S_PCI_PCSTAT2, cs2,
val = readl_relaxed(host->axi + RZG3S_PCI_PCSTAT2);