Hi Vinod,

On Mon, Mar 16, 2015 at 2:59 PM, Vinod Koul [off-list ref] wrote:

On Thu, Mar 12, 2015 at 04:45:21PM +0530, Rameshwar Prasad Sahu wrote:

quoted

This patch adds device tree binding for APM X-Gene SoC DMA engine driver.

The patch title should be to add the bindings and not Documentation

Got it, thanks

--
~Vinod

quoted

Signed-off-by: Rameshwar Prasad Sahu <redacted>
Signed-off-by: Loc Ho <redacted>
---
 .../devicetree/bindings/dma/apm-xgene-dma.txt      | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/apm-xgene-dma.txt

diff --git a/Documentation/devicetree/bindings/dma/apm-xgene-dma.txt b/Documentation/devicetree/bindings/dma/apm-xgene-dma.txt
new file mode 100644
index 0000000..d305876
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/apm-xgene-dma.txt

@@ -0,0 +1,47 @@
+Applied Micro X-Gene SoC DMA nodes
+
+DMA nodes are defined to describe on-chip DMA interfaces in
+APM X-Gene SoC.
+
+Required properties for DMA interfaces:
+- compatible: Should be "apm,xgene-dma".
+- device_type: set to "dma".
+- reg: Address and length of the register set for the device.
+  It contains the information of registers in the following order:
+  1st - DMA control and status register address space.
+  2nd - Descriptor ring control and status register address space.
+  3rd - Descriptor ring command register address space.
+  4th - Soc efuse register address space.
+- interrupts: DMA has 5 interrupts sources. 1st interrupt is
+  DMA error reporting interrupt. 2nd, 3rd, 4th and 5th interrupts
+  are completion interrupts for each DMA channels.
+- clocks: Reference to the clock entry.
+
+Optional properties:
+- dma-coherent : Present if dma operations are coherent
+
+Example:
+     dmaclk: dmaclk at 1f27c000 {
+             compatible = "apm,xgene-device-clock";
+             #clock-cells = <1>;
+             clocks = <&socplldiv2 0>;
+             reg = <0x0 0x1f27c000 0x0 0x1000>;
+             reg-names = "csr-reg";
+             clock-output-names = "dmaclk";
+     };
+
+     dma: dma at 1f270000 {
+                     compatible = "apm,xgene-storm-dma";
+                     device_type = "dma";
+                     reg = <0x0 0x1f270000 0x0 0x10000>,
+                           <0x0 0x1f200000 0x0 0x10000>,
+                           <0x0 0x1b008000 0x0 0x2000>,
+                           <0x0 0x1054a000 0x0 0x100>;
+                     interrupts = <0x0 0x82 0x4>,
+                                  <0x0 0xb8 0x4>,
+                                  <0x0 0xb9 0x4>,
+                                  <0x0 0xba 0x4>,
+                                  <0x0 0xbb 0x4>;
+                     dma-coherent;
+                     clocks = <&dmaclk 0>;
+     };
--

1.8.2.1

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