Commit 766b540d authored by Radhey Shyam Pandey's avatar Radhey Shyam Pandey Committed by Vinod Koul
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dt-bindings: dmaengine: xilinx_dma: Add MCMDA channel ID index description 



MCDMA IP provides up to 16 multiple channels of data movement each on
MM2S and S2MM paths. Inline with implementation, in the binding add
description for the channel ID start index and mention that it's fixed
irrespective of the MCDMA IP configuration(number of read/write channels).

Signed-off-by: default avatarRadhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1649939061-6675-1-git-send-email-radhey.shyam.pandey@xilinx.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent d0a3ef60

Documentation/devicetree/bindings/dma/xilinx/xilinx_dma.txt

+5 −1
Original line number Diff line number Diff line
@@ -110,7 +110,11 @@ axi_vdma_0: axivdma@40030000 { 
Required properties:

- dmas: a list of <[Video DMA device phandle] [Channel ID]> pairs,

	where Channel ID is '0' for write/tx and '1' for read/rx

	channel.

	channel. For MCMDA, MM2S channel(write/tx) ID start from

	'0' and is in [0-15] range. S2MM channel(read/rx) ID start

	from '16' and is in [16-31] range. These channels ID are

	fixed irrespective of IP configuration.



- dma-names: a list of DMA channel names, one per "dmas" entry



Example: