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Documentation: DT: vdma: Add clock support for dmas

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This patch updates the binding doc with clock description
for AXI DMA's.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Kedareswara rao Appana 2016-05-13 12:33:30 +05:30 committed by Vinod Koul
parent fb2366675e
commit 4ac4e12067
1 changed files with 15 additions and 0 deletions
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15
Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
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@ -21,6 +21,18 @@ Required properties:
- dma-channel child node: Should have at least one channel and can have up to
two channels per device. This node specifies the properties of each
DMA channel (see child node properties below).
- clocks: Input clock specifier. Refer to common clock bindings.
- clock-names: List of input clocks
For VDMA:
Required elements: "s_axi_lite_aclk"
Optional elements: "m_axi_mm2s_aclk" "m_axi_s2mm_aclk",
"m_axis_mm2s_aclk", "s_axis_s2mm_aclk"
For CDMA:
Required elements: "s_axi_lite_aclk", "m_axi_aclk"
FOR AXIDMA:
Required elements: "s_axi_lite_aclk"
Optional elements: "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
"m_axi_sg_aclk"
Required properties for VDMA:
- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w.
@ -60,6 +72,9 @@ axi_vdma_0: axivdma@40030000 {
xlnx,num-fstores = <0x8>;
xlnx,flush-fsync = <0x1>;
xlnx,addrwidth = <0x20>;
clocks = <&clk 0>, <&clk 1>, <&clk 2>, <&clk 3>, <&clk 4>;
clock-names = "s_axi_lite_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk",
"m_axis_mm2s_aclk", "s_axis_s2mm_aclk";
dma-channel@40030000 {
compatible = "xlnx,axi-vdma-mm2s-channel";
interrupts = < 0 54 4 >;