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authorKedareswara rao Appana <appana.durga.rao@xilinx.com>2016-04-07 10:59:44 +0530
committerVinod Koul <vinod.koul@intel.com>2016-05-12 11:58:41 +0530
commit3843dc282e2b48730c4dc669d7d5671331155c2f (patch)
tree6277076769f327ae6f46158502ee7c53736b46e3 /Documentation/devicetree/bindings/dma
parentc0bba3a99f0709c24c2c7ada7cb098966b1d791f (diff)
downloadop-kernel-dev-3843dc282e2b48730c4dc669d7d5671331155c2f.zip
op-kernel-dev-3843dc282e2b48730c4dc669d7d5671331155c2f.tar.gz
Documentation: DT: vdma: update binding doc for AXI CDMA
This patch updates the device-tree binding doc for adding support for AXI CDMA. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/devicetree/bindings/dma')
-rw-r--r--Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt6
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
index 3fb23fe..fcc2b65 100644
--- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
+++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
@@ -8,8 +8,12 @@ target devices. It can be configured to have one channel or two channels.
If configured as two channels, one is to transmit to the device and another
is to receive from the device.
+Xilinx AXI CDMA engine, it does transfers between memory-mapped source
+address and a memory-mapped destination address.
+
Required properties:
-- compatible: Should be "xlnx,axi-vdma-1.00.a" or "xlnx,axi-dma-1.00.a"
+- compatible: Should be "xlnx,axi-vdma-1.00.a" or "xlnx,axi-dma-1.00.a" or
+ "xlnx,axi-cdma-1.00.a""
- #dma-cells: Should be <1>, see "dmas" property below
- reg: Should contain VDMA registers location and length.
- xlnx,addrwidth: Should be the vdma addressing size in bits(ex: 32 bits).
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