Commit 872eb918 authored by Marek Vasut's avatar Marek Vasut Committed by Greg Kroah-Hartman
Browse files

dt-bindings: serial: imx: Document mandatory clock properties 



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

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Acked-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230219142250.10176-2-marex@denx.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent cf8d4027

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

+15 −0
Original line number Diff line number Diff line
@@ -49,6 +49,14 @@ properties: 
  reg:

    maxItems: 1



  clocks:

    maxItems: 2



  clock-names:

    items:

      - const: ipg

      - const: per



  dmas:

    items:

      - description: DMA controller phandle and request line for RX
@@ -96,12 +104,16 @@ properties: 
required:

  - compatible

  - reg

  - clocks

  - clock-names

  - interrupts



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/clock/imx5-clock.h>



    aliases {

        serial0 = &uart1;

    };
@@ -110,6 +122,9 @@ examples: 
        compatible = "fsl,imx51-uart", "fsl,imx21-uart";

        reg = <0x73fbc000 0x4000>;

        interrupts = <31>;

        clocks = <&clks IMX5_CLK_UART1_IPG_GATE>,

                 <&clks IMX5_CLK_UART1_PER_GATE>;

        clock-names = "ipg", "per";

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

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

        uart-has-rtscts;