FSPI_DLLBCR
fspi_writel(f, FSPI_DLLBCR_DLLRESET, f->iobase + FSPI_DLLBCR);
fspi_writel(f, 0, f->iobase + FSPI_DLLBCR);
f->iobase + FSPI_DLLBCR);
fspi_writel(f, FSPI_DLLBCR_OVRDEN, f->iobase + FSPI_DLLBCR);