[PATCH v2 1/2] Documentation: DT: vdma: Add clock support for vdma

Kedareswara rao Appana
2016-04-20T11:43:34Z

This patch updates the binding doc with clock description
for vdma.

Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com>
---
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 names.

Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
index fcc2b65..afe9eb7 100644
--- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
+++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt
@@ -21,6 +21,11 @@ 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 "s_axi_lite_aclk", "m_axi_mm2s_aclk"
+ "m_axi_s2mm_aclk", "m_axis_mm2s_aclk", "s_axis_s2mm_aclk"
+ (list of input cloks may vary based on the ip configuration.
+ see clock bindings for more info).

Required properties for VDMA:
- xlnx,num-fstores: Should be the number of framebuffers as configured in h/w.
@@ -60,6 +65,9 @@ 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 >;
--
2.1.2