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dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA handshake
Add support for Intel KeemBay AxiDMA device handshake programming. Device handshake number passed in to the AxiDMA shall be written to the Intel KeemBay AxiDMA hardware handshake registers before DMA operations are started. Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
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