ESDHC_DMA_SYSCTL
val = sdhci_readl(host, ESDHC_DMA_SYSCTL);
sdhci_writel(host, val, ESDHC_DMA_SYSCTL);
value = sdhci_readl(host, ESDHC_DMA_SYSCTL);
sdhci_writel(host, value, ESDHC_DMA_SYSCTL);
val = sdhci_readl(host, ESDHC_DMA_SYSCTL);
sdhci_writel(host, val, ESDHC_DMA_SYSCTL);
if (!(sdhci_readl(host, ESDHC_DMA_SYSCTL) &