Re: [PATCH 1/2] dt: bindings: fpga: add xilinx slave-serial binding description

[Joshua Clayton <stillcompiling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 02/16/2017 07:10 AM, Anatolij Gustschin wrote:
> Add dt binding documentation details for Xilinx FPGA configuration
> over slave serial interface.
>
> Signed-off-by: Anatolij Gustschin <agust-ynQEQJNshbs@public.gmane.org>
> ---
>  .../bindings/fpga/xilinx-slave-serial.txt          | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
>
> diff --git a/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt b/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
> new file mode 100644
> index 0000000..b5fa6a6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt
> @@ -0,0 +1,24 @@
> +Xilinx Slave Serial SPI FPGA Manager
> +
> +Xilinx Spartan-6 FPGAs support a method of loading the bitstream over
> +what is referred to as "slave serial" interface.
> +The slave serial link is not technically SPI, and might require extra
> +circuits in order to play nicely with other SPI slaves on the same bus.
> +
> +See https://www.xilinx.com/support/documentation/user_guides/ug380.pdf
> +
> +Required properties:
> +- compatible: should contain "xlnx,fpga-slave-serial"
> +- reg: spi chip select of the FPGA
> +- prog_b-gpios: config pin (referred to as PROGRAM_B in the manual)
> +- done-gpios: config status pin (referred to as DONE in the manual)
> +
> +Example:
> +	fpga_mgr_spi: fpga-spi@0 {
> +		compatible = "xlnx,fpga-slave-serial";
> +		spi-max-frequency = <60000000>;
> +		spi-cpha;
> +		reg = <0>;
> +		done-gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>;
> +		prog_b-gpio = <&gpio0 29 GPIO_ACTIVE_LOW>;
> +	};
nit: you've put prog_b-gpios and done-gpios in the description,
but the example still has "prog_b-gpio" and "done-gpio"
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