dma: imx-sdma: Add new dma type for ssi dual fifo script
This patch adds a new DMA_TYPE for SSI dual FIFO script, included in SDMA firmware version 2. This script would allow SSI use dual fifo mode to transimit/receive data without occasional hardware underrun/overrun. Signed-off-by: NNicolin Chen <b42378@freescale.com> Acked-by: NKumar Gala <galak@codeaurora.org> Acked-by: NSascha Hauer <s.hauer@pengutronix.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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