MMC_REG_BUFFER_ACCESS
*buf++ = cpu_to_le32(mxcmci_readl(host, MMC_REG_BUFFER_ACCESS));
tmp = cpu_to_le32(mxcmci_readl(host, MMC_REG_BUFFER_ACCESS));
mxcmci_writel(host, cpu_to_le32(*buf++), MMC_REG_BUFFER_ACCESS);
mxcmci_writel(host, cpu_to_le32(tmp), MMC_REG_BUFFER_ACCESS);
config->dst_addr = host->phys_base + MMC_REG_BUFFER_ACCESS;
config->src_addr = host->phys_base + MMC_REG_BUFFER_ACCESS;