dmaengine: ti: edma: support sw triggered chans in of_edma_xlate()

The .of_edma_xlate() function always sets the hw_triggered flag to
true. This causes sw triggered channels consumed via the device-tree
to not function properly, as the driver incorrectly assumes they are
hw triggered. Modify the xlate() function to correctly set the
hw_triggered flag to false for channels reserved for memcpy
operation (ie, sw triggered).

Signed-off-by: Matthew Majewski <[email protected]>
Acked-by: Peter Ujfalusi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Matthew Majewski

drivers/dma/ti/edma.c

@@ -2259,8 +2259,12 @@ static struct dma_chan *of_edma_xlate(struct of_phandle_args *dma_spec,
 
 	return NULL;
 out:
-	/* The channel is going to be used as HW synchronized */
-	echan->hw_triggered = true;
+	/*
+	 * The channel is going to be HW synchronized, unless it was
+	 * reserved as a memcpy channel
+	 */
+	echan->hw_triggered =
+		!edma_is_memcpy_channel(i, ecc->info->memcpy_channels);
 	return dma_get_slave_channel(chan);
 }
 #else