ASPEED_H2X_STS
cfg_val = readl(pcie->reg + ASPEED_H2X_STS);
writel(cfg_val, pcie->reg + ASPEED_H2X_STS);
ret = readl_poll_timeout(pcie->reg + ASPEED_H2X_STS, cfg_val,
cfg_val = readl(pcie->reg + ASPEED_H2X_STS);