dma: mmp_pdma: Add the #dma-requests DT property documentation
For pxa based platforms, the number of requestor lines should be specified, so that the driver can check if the flow control should be activated (when a requestor line is asked for) or not. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Rob Herring <robh@kernel.org>
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@ -12,6 +12,8 @@ Required properties:
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Optional properties:
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- #dma-channels: Number of DMA channels supported by the controller (defaults
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to 32 when not specified)
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- #dma-requests: Number of DMA requestor lines supported by the controller
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(defaults to 32 when not specified)
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"marvell,pdma-1.0"
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Used platforms: pxa25x, pxa27x, pxa3xx, pxa93x, pxa168, pxa910, pxa688.
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