DW_SPI_CTRLR0
dw_writel(dws, DW_SPI_CTRLR0, cr0);
DW_SPI_DBGFS_REG("CTRLR0", DW_SPI_CTRLR0),
u32 cr0, tmp = dw_readl(dws, DW_SPI_CTRLR0);
dw_writel(dws, DW_SPI_CTRLR0, 0xffffffff);
cr0 = dw_readl(dws, DW_SPI_CTRLR0);
dw_writel(dws, DW_SPI_CTRLR0, tmp);