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Groups > linux.kernel > #1400548
| 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 |
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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