MXC_CSPICTRL
writel(reg, spi_imx->base + MXC_CSPICTRL);
reg = readl(spi_imx->base + MXC_CSPICTRL);
writel(reg, spi_imx->base + MXC_CSPICTRL);
writel(reg, spi_imx->base + MXC_CSPICTRL);
writel(0, spi_imx->base + MXC_CSPICTRL);
reg = readl(spi_imx->base + MXC_CSPICTRL);
writel(reg, spi_imx->base + MXC_CSPICTRL);
writel(reg, spi_imx->base + MXC_CSPICTRL);
reg = readl(spi_imx->base + MXC_CSPICTRL);
writel(reg, spi_imx->base + MXC_CSPICTRL);