Commit cf8d4027 authored by Marek Vasut's avatar Marek Vasut Committed by Greg Kroah-Hartman
Browse files

dt-bindings: serial: imx: Document optional DMA properties 



The UART IP can be connected to DMA engine, document the properties in DT bindings.
Update example to match Linux arch/arm/boot/dts/imx51.dtsi .

Acked-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230219142250.10176-1-marex@denx.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 728648c7

Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml

+12 −0
Original line number Diff line number Diff line
@@ -49,6 +49,16 @@ properties: 
  reg:

    maxItems: 1



  dmas:

    items:

      - description: DMA controller phandle and request line for RX

      - description: DMA controller phandle and request line for TX



  dma-names:

    items:

      - const: rx

      - const: tx



  interrupts:

    maxItems: 1
@@ -100,6 +110,8 @@ examples: 
        compatible = "fsl,imx51-uart", "fsl,imx21-uart";

        reg = <0x73fbc000 0x4000>;

        interrupts = <31>;

        dmas = <&sdma 18 4 1>, <&sdma 19 4 2>;

        dma-names = "rx", "tx";

        uart-has-rtscts;

        fsl,dte-mode;

    };