On Mon, Feb 17, 2014 at 05:28:07AM +0000, Yuan Yao wrote:
> Add dma support for lpuart. This function depend on DMA driver.
> You can turn on it by write both the dmas and dma-name properties in dts node.
>
> Signed-off-by: Yuan Yao <yao.yuan@xxxxxxxxxxxxx>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> .../devicetree/bindings/serial/fsl-lpuart.txt | 19 +-
> drivers/tty/serial/fsl_lpuart.c | 430 ++++++++++++++++++++-
> 2 files changed, 433 insertions(+), 16 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/serial/fsl-lpuart.txt b/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
> index 6fd1dd1..6e1cbbf 100644
> --- a/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
> +++ b/Documentation/devicetree/bindings/serial/fsl-lpuart.txt
> @@ -5,10 +5,19 @@ Reqiuired properties:
> - reg : Address and length of the register set for the device
> - interrupts : Should contain uart interrupt
>
> +Optional properties:
> +- dmas: A list of two dma specifiers, one for each entry in dma-names.
> +- dma-names: should contain "tx" and "rx".
> +
> +Note: Optional properties for DMA support. Write them both or both not.
> +
> Example:
>
> uart0: serial@40027000 {
> - compatible = "fsl,vf610-lpuart";
> - reg = <0x40027000 0x1000>;
> - interrupts = <0 61 0x00>;
> - };
> + compatible = "fsl,vf610-lpuart";
> + reg = <0x40027000 0x1000>;
> + interrupts = <0 61 0x00>;
> + dmas = <&edma0 0 2>,
> + <&edma0 0 3>;
> + dma-names = "rx","tx";
> + };
For the binding:
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Mark.
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