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    Subject[PATCH v8 10/16] dt-bindings: Document the STM32 USART bindings
    Date
    This adds documentation of device tree bindings for the
    STM32 USART

    Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
    Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
    ---
    .../devicetree/bindings/serial/st,stm32-usart.txt | 32 ++++++++++++++++++++++
    1 file changed, 32 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/serial/st,stm32-usart.txt

    diff --git a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt
    new file mode 100644
    index 0000000..8480a76
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt
    @@ -0,0 +1,32 @@
    +* STMicroelectronics STM32 USART
    +
    +Required properties:
    +- compatible: Can be either "st,stm32-usart" or "st,stm32-uart" depending on
    +whether the device supports synchronous mode.
    +- reg: The address and length of the peripheral registers space
    +- interrupts: The interrupt line of the USART instance
    +- clocks: The input clock of the USART instance
    +
    +Optional properties:
    +- pinctrl: The reference on the pins configuration
    +- auto-flow-control: bool flag to enable hardware flow control.
    +
    +Examples:
    +usart4: serial@40004c00 {
    + compatible = "st,stm32-uart";
    + reg = <0x40004c00 0x400>;
    + interrupts = <52>;
    + clocks = <&clk_pclk1>;
    + pinctrl-names = "default";
    + pinctrl-0 = <&pinctrl_usart4>;
    +};
    +
    +usart2: serial@40004400 {
    + compatible = "st,stm32-usart", "st,stm32-uart";
    + reg = <0x40004400 0x400>;
    + interrupts = <38>;
    + clocks = <&clk_pclk1>;
    + auto-flow-control;
    + pinctrl-names = "default";
    + pinctrl-0 = <&pinctrl_usart2 &pinctrl_usart2_rtscts>;
    +};
    --
    1.9.1


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