/* If enable the external start, the channel can be started by an external DMA start pin. So the dma_start() does not start the transfer immediately. The DMA channel will wait for the control pin asserted.  */
static void fsl_chan_toggle_ext_start(struct fsl_dma_chan *fsl_chan, int enable)
/* If enable the external start, the channel can be started by an external DMA start pin. So the dma_start() does not start the transfer immediately. The DMA channel will wait for the control pin asserted.  */
static void fsl_chan_toggle_ext_start(struct fsl_dma_chan *fsl_chan, int enable)
{
	if (enable)
		fsl_chan->feature |= FSL_DMA_CHAN_START_EXT;
	else
		fsl_chan->feature &= ~FSL_DMA_CHAN_START_EXT;
}