lkml.org 
[lkml]   [2014]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v5 2/2] Documentation:add DMA support for freescale i2c driver
    Date
    Add i2c dts node properties for eDMA support, them depend on the eDMA driver.

    Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
    ---
    Documentation/devicetree/bindings/i2c/i2c-imx.txt | 11 +++++++++++
    1 file changed, 11 insertions(+)

    diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx.txt b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
    index 4a8513e..52d37fd 100644
    --- a/Documentation/devicetree/bindings/i2c/i2c-imx.txt
    +++ b/Documentation/devicetree/bindings/i2c/i2c-imx.txt
    @@ -11,6 +11,8 @@ Required properties:
    Optional properties:
    - clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
    The absence of the propoerty indicates the default frequency 100 kHz.
    +- dmas: A list of two dma specifiers, one for each entry in dma-names.
    +- dma-names: should contain "tx" and "rx".

    Examples:

    @@ -26,3 +28,12 @@ i2c@70038000 { /* HS-I2C on i.MX51 */
    interrupts = <64>;
    clock-frequency = <400000>;
    };
    +
    +i2c0: i2c@40066000 { /* i2c0 on vf610 */
    + compatible = "fsl,vf610-i2c";
    + reg = <0x40066000 0x1000>;
    + interrupts =<0 71 0x04>;
    + dmas = <&edma0 0 50>,
    + <&edma0 0 51>;
    + dma-names = "rx","tx";
    +};
    --
    1.8.4


    \
     
     \ /
      Last update: 2014-07-23 12:21    [W:3.421 / U:0.004 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site