On Thu, Mar 12, 2015 at 04:45:21PM +0530, Rameshwar Prasad Sahu wrote:
> 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
--
~Vinod
>
> Signed-off-by: Rameshwar Prasad Sahu <rsahu@xxxxxxx>
> Signed-off-by: Loc Ho <lho@xxxxxxx>
> ---
> .../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@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@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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