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