SPI_FAST_SEQ_CFG
writel(0x00040000, fsm->base + SPI_FAST_SEQ_CFG);
readl(fsm->base + SPI_FAST_SEQ_CFG);
writel(SEQ_CFG_SWRESET, fsm->base + SPI_FAST_SEQ_CFG);
writel(0, fsm->base + SPI_FAST_SEQ_CFG);
writel(seq->seq_cfg, fsm->base + SPI_FAST_SEQ_CFG);