SPRD_SPI_FIFO_SIZE
u32 size = t->bits_per_word * SPRD_SPI_FIFO_SIZE;
u32 interval_cycle = SPRD_SPI_FIFO_SIZE * ss->word_delay;
len = trans_len > SPRD_SPI_FIFO_SIZE ? SPRD_SPI_FIFO_SIZE :
return ss->dma.enable && (t->len > SPRD_SPI_FIFO_SIZE);