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-rw-r--r--Documentation/devicetree/bindings/dma/atmel-dma.txt9
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/dma/atmel-dma.txt b/Documentation/devicetree/bindings/dma/atmel-dma.txt
index c80e8a3402f0..e1f343c7a34b 100644
--- a/Documentation/devicetree/bindings/dma/atmel-dma.txt
+++ b/Documentation/devicetree/bindings/dma/atmel-dma.txt
@@ -18,14 +18,17 @@ dma0: dma@ffffec00 {
DMA clients connected to the Atmel DMA controller must use the format
described in the dma.txt file, using a three-cell specifier for each channel:
-a phandle plus two interger cells.
+a phandle plus two integer cells.
The three cells in order are:
1. A phandle pointing to the DMA controller.
2. The memory interface (16 most significant bits), the peripheral interface
(16 less significant bits).
-3. The peripheral identifier for the hardware handshaking interface. The
-identifier can be different for tx and rx.
+3. Parameters for the at91 DMA configuration register which are device
+dependent:
+ - bit 7-0: peripheral identifier for the hardware handshaking interface. The
+ identifier can be different for tx and rx.
+ - bit 11-8: FIFO configuration. 0 for half FIFO, 1 for ALAP, 1 for ASAP.
Example: