SDHCFG
writel(host->hcfg, host->ioaddr + SDHCFG);
dev_dbg(dev, "SDHCFG 0x%08x\n", readl(host->ioaddr + SDHCFG));
writel(0, host->ioaddr + SDHCFG);
writel(host->hcfg, host->ioaddr + SDHCFG);
writel(host->hcfg, host->ioaddr + SDHCFG);
writel(host->hcfg, host->ioaddr + SDHCFG);
writel(host->hcfg, host->ioaddr + SDHCFG);
writel(host->hcfg, host->ioaddr + SDHCFG);