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axi_dmac: Remove backpressure from the source pipeline
Data is gated on the source side interface and not let into the pipeline if there is no space available inside the store and forward memory. This means whenever data is let into the pipeline space is available and backpressure wont be asserted. Remove the backpressure signals altogether to simplify the design. Signed-off-by: Lars-Peter Clausen <[email protected]>
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