[v4,2/3] Documentation: DT: vdma: Add clock support for dmas

Commit Message

Appana Durga Kedareswara rao April 22, 2016, 6:13 a.m. UTC

This patch updates the binding doc with clock description
for AXI DMA's.

Acked-by: Sören Brinkmann <[e-mail]>
Signed-off-by: Kedareswara rao Appana <[e-mail]>
---
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(+)

Comments

Rob Herring April 22, 2016, 8:34 p.m. UTC | #1

On Fri, Apr 22, 2016 at 11:43:49AM +0530, Kedareswara rao Appana wrote:
> This patch updates the binding doc with clock description
> for AXI DMA's.
> 
> Acked-by: Sören Brinkmann <[e-mail]>
> Signed-off-by: Kedareswara rao Appana <[e-mail]>
> ---
> 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(+)

Acked-by: Rob Herring <[e-mail]>

Patch

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 >;