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Commit 4ac4e120 authored by Kedareswara rao Appana's avatar Kedareswara rao Appana Committed by Vinod Koul
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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: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarSören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: default avatarKedareswara rao Appana <appanad@xilinx.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent fb236667

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

+15 −0
Original line number Diff line number Diff line
@@ -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 >;