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[PATCH v5 2/3] Documentation: DT: vdma: Add clock support for dmas

From Kedareswara rao Appana <appana.durga.rao@xilinx.com>
Newsgroups linux.kernel
Subject [PATCH v5 2/3] Documentation: DT: vdma: Add clock support for dmas
Date 2016-05-13 09:10 +0200
Message-ID <ryfou-6Of-9@gated-at.bofh.it> (permalink)
References <ryfot-6Of-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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>
---
Changes for v5:
---> None.
Changes for v4:
---> None.
Changes for v3:
---> Added clock support for all the AXI DMA's.
Changes for v2:
--> Listed down all the clocks supported by the h/w
    as suggested by the Datta.
--> Used IP clock names instead of shortcut clock name

 .../devicetree/bindings/dma/xilinx/xilinx_vdma.txt        | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
index fcc2b65..a1f2683 100644
--- 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 >;
-- 
2.1.1

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[PATCH v5 0/3] dmaengine: Add clock support for AXI DMAS Kedareswara rao Appana <appana.durga.rao@xilinx.com> - 2016-05-13 09:10 +0200
  [PATCH v5 1/3] dmaengine: vdma: Add config structure to differentiate dmas Kedareswara rao Appana <appana.durga.rao@xilinx.com> - 2016-05-13 09:10 +0200
  [PATCH v5 2/3] Documentation: DT: vdma: Add clock support for dmas Kedareswara rao Appana <appana.durga.rao@xilinx.com> - 2016-05-13 09:10 +0200
  [PATCH v5 3/3] dmaengine: vdma: Add clock support Kedareswara rao Appana <appana.durga.rao@xilinx.com> - 2016-05-13 09:10 +0200
  Re: [PATCH v5 0/3] dmaengine: Add clock support for AXI DMAS Vinod Koul <vinod.koul@intel.com> - 2016-05-13 11:30 +0200

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