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Documentation: DT: vdma: Add clock support for dmas 

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 - 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 two channels per device. This node specifies the properties of each
DMA channel (see child node properties below). 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: Required properties for VDMA:
- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w. - 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,num-fstores = <0x8>;
xlnx,flush-fsync = <0x1>; xlnx,flush-fsync = <0x1>;
xlnx,addrwidth = <0x20>; 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 { dma-channel@40030000 {
compatible = "xlnx,axi-vdma-mm2s-channel"; compatible = "xlnx,axi-vdma-mm2s-channel";
interrupts = < 0 54 4 >; interrupts = < 0 54 4 >;