Commit 4ac4e120 authored by Kedareswara rao Appana's avatar Kedareswara rao Appana Committed by Vinod Koul
Browse files

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 Original line 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

- 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 >;