REG_FRAMESUP
writel_relaxed(frames, qspi->regs + REG_FRAMESUP);
writel_relaxed(frames, qspi->regs + REG_FRAMESUP);
u32 frames = mpfs_spi_read(spi, REG_FRAMESUP);
mpfs_spi_write(spi, REG_FRAMESUP, len);