linux-kernel - Re: [PATCH v3 2/3] dt-bindings: fpga: Add bindings for ZynqMP fpga driver

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Date:   Mon, 18 Feb 2019 11:28:02 -0600
From:   Rob Herring <robh@...nel.org>
To:     Nava kishore Manne <nava.manne@...inx.com>
Cc:     atull@...nel.org, mdf@...nel.org, mark.rutland@....com,
        michal.simek@...inx.com, rajanv@...inx.com, jollys@...inx.com,
        linux-fpga@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        chinnikishore369@...il.com
Subject: Re: [PATCH v3 2/3] dt-bindings: fpga: Add bindings for ZynqMP fpga
 driver

On Mon, Feb 11, 2019 at 09:47:36PM +0530, Nava kishore Manne wrote:
> Add documentation to describe Xilinx ZynqMP fpga driver
> bindings.

I thought I was told in the review of the firmware binding that is went 
away...

> 
> Signed-off-by: Nava kishore Manne <nava.manne@...inx.com>
> ---
> Changes for v3:
> 		-Created patches on top of 5.0-rc5.
>                  No functional changes.
> Changes for v2:
>                 -Removed "----" separators.
> Changes for v1:
>                 -Created a Seperate(New) DT binding file as
>                  suggested by Rob.
> 
> Changes for RFC-V2:
>                 -Moved pcap node as a child to firwmare
>                  node as suggested by Rob.
> 
>  .../devicetree/bindings/fpga/xlnx,zynqmp-pcap-fpga.txt      | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/fpga/xlnx,zynqmp-pcap-fpga.txt
> 
> diff --git a/Documentation/devicetree/bindings/fpga/xlnx,zynqmp-pcap-fpga.txt b/Documentation/devicetree/bindings/fpga/xlnx,zynqmp-pcap-fpga.txt
> new file mode 100644
> index 0000000..1f6f588
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/fpga/xlnx,zynqmp-pcap-fpga.txt
> @@ -0,0 +1,13 @@
> +Device Tree zynqmp-fpga bindings for the Zynq Ultrascale+ MPSoC controlled
> +using ZynqMP SoC firmware interface
> +For Bitstream configuration on ZynqMp Soc uses processor configuration
> +port(PCAP) to configure the programmable logic(PL) through PS by using
> +FW interface.
> +
> +Required properties:
> +- compatible: should contain "xlnx,zynqmp-pcap-fpga"
> +
> +Example:
> +	zynqmp_pcap: pcap {
> +		compatible = "xlnx,zynqmp-pcap-fpga";

There's no DT resources here, so there's no need for this in DT. Just 
have the parent (the firmware driver) instantiate the driver.

Rob