SPMMC_HW_DMA_CTRL_REG
value = readl(host->base + SPMMC_HW_DMA_CTRL_REG);
writel(value, host->base + SPMMC_HW_DMA_CTRL_REG);
writel(value, host->base + SPMMC_HW_DMA_CTRL_REG);
value = readl(host->base + SPMMC_HW_DMA_CTRL_REG);
writel(value, host->base + SPMMC_HW_DMA_CTRL_REG);