FSPI_DLLACR
fspi_writel(f, FSPI_DLLACR_DLLRESET, f->iobase + FSPI_DLLACR);
fspi_writel(f, 0, f->iobase + FSPI_DLLACR);
f->iobase + FSPI_DLLACR);
fspi_writel(f, FSPI_DLLACR_OVRDEN, f->iobase + FSPI_DLLACR);