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>

diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
index fcc2b65..a1f2683 100644 (file)
--- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
+++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
@@ -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 >;