On Mon, Jul 16, 2018 at 10:53:54AM +0530, shubhrajyoti.datta@xxxxxxxxx wrote:
> From: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
>
> Add binding doc for uartlite
A note that this binding is already in use and was undocumented would be
nice.
>
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
> ---
> v2:
> lowercase for hex values
> interrupt description updated
> v3:
> squashed the clock changes
>
> .../bindings/serial/xlnx,opb-uartlite.txt | 23 ++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt
>
> diff --git a/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt
> new file mode 100644
> index 0000000..52719b9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/xlnx,opb-uartlite.txt
> @@ -0,0 +1,23 @@
> +Xilinx Axi Uartlite controller Device Tree Bindings
> +---------------------------------------------------------
> +
> +Required properties:
> +- compatible : Can be either of
> + "xlnx,xps-uartlite-1.00.a"
> + "xlnx,opb-uartlite-1.00.b"
> +- reg : Physical base address and size of the Axi Uartlite
> + registers map.
> +- interrupts : Should contain UART controller interrupts.
How many?
> +
> +Optional properties:
> +- port-number : Set Uart port number
> +- clock-names : Should be "s_axi_aclk"
> +- clocks : Input clock specifier. Refer to common clock bindings.
How do you calc baud rates if this is omitted?
> +
> +Example:
> +serial@800c0000 {
> + compatible = "xlnx,xps-uartlite-1.00.a";
> + reg = <0x0 0x800c0000 0x10000>;
> + interrupts = <0x0 0x6e 0x1>;
> + port-number = <0>;
> +};
> --
> 2.7.4
>
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