soc/fsl/fsl_dma.c

125  * limitation in the SSI driver requires the sample rates for playback and
458 	 * because the SSI is controlling the DMA controller.  We want the DMA
459 	 * controller to be set up in advance, and then we signal only the SSI
523 	/* Bus address of SSI STX register */
556 	/* Due to a quirk of the SSI's STX register, the target address
581 	 * controller checks the SSI to see if it needs to stop. BWC should
593 	 * f = SSI FIFO depth
594 	 * w = SSI watermark value (which equals f - 2)
622 		 * device (the SSI's STX0 or SRX0 register). Snooping is only
701 	 * When capture is started, the SSI immediately starts to fill its FIFO.
795  * find_ssi_node -- returns the SSI node that points to its DMA channel node
798  * devices, it still needs to determine some information about the SSI device
800  * a pointer from the DMA channel node to the SSI node -- the pointer goes the
801  * other way.  So we need to scan the device tree for SSI nodes until we find
809 	for_each_compatible_node(ssi_np, NULL, "fsl,mpc8610-ssi") {
836 	/* Find the SSI node that points to us. */
839 		dev_err(&pdev->dev, "cannot find parent SSI node\n");
865 	/* Store the SSI-specific information that we need */
903 	{ .compatible = "fsl,ssi-dma-channel", },