[PATCH 3/4] DT: Add binding for Altera FPGAs in passive-serial mode

[Kumar Gala]

On Nov 12, 2013, at 8:31 AM, Sascha Hauer <s.hauer at pengutronix.de> wrote:

> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> Cc: devicetree at vger.kernel.org
> ---
> .../devicetree/bindings/firmware/altr,passive-serial.txt    | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/firmware/altr,passive-serial.txt
> 
> diff --git a/Documentation/devicetree/bindings/firmware/altr,passive-serial.txt b/Documentation/devicetree/bindings/firmware/altr,passive-serial.txt
> new file mode 100644
> index 0000000..6d40c91
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/firmware/altr,passive-serial.txt
> @@ -0,0 +1,13 @@
> +Altera FPGAs in passive serial mode
> +-----------------------------------
> +
> +This binding defines the control interface to Altera FPGAs in
> +passive serial mode. This is used to upload the firmware and
> +to start the FPGA.
> +
> +Required properties:
> +- compatible: shall be "altr,passive-serial”

This doesn’t seem quite descriptive enough, easy to confuse with a serial port.

> +- reg: SPI chip select

Is this a SPI device than?

> +- nstat-gpio: Specify GPIO for controlling the nstat pin
> +- confd-gpio: Specify GPIO for controlling the confd pin
> +- nconfig-gpio: Specify GPIO for controlling the nconfig pin
> -- 
> 1.8.4.2
> 
> --
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