linux-kernel - Re: [PATCHv2 4/7] dt-bindings: fpga: add Stratix10 SoC FPGA manager binding

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Message-ID: <20180307194745.657ewa6rtcta6eqm@rob-hp-laptop>
Date:   Wed, 7 Mar 2018 13:47:45 -0600
From:   Rob Herring <robh@...nel.org>
To:     richard.gong@...ux.intel.com
Cc:     catalin.marinas@....com, will.deacon@....com, dinguyen@...nel.org,
        mark.rutland@....com, atull@...nel.org, mdf@...nel.org,
        arnd@...db.de, gregkh@...uxfoundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-fpga@...r.kernel.org,
        yves.vandervennet@...ux.intel.com
Subject: Re: [PATCHv2 4/7] dt-bindings: fpga: add Stratix10 SoC FPGA manager
 binding

On Thu, Mar 01, 2018 at 06:19:32PM -0600, richard.gong@...ux.intel.com wrote:
> From: Alan Tull <atull@...nel.org>
> 
> Add a Device Tree binding for the Intel Stratix10 SoC FPGA manager.
> 
> Signed-off-by: Alan Tull <atull@...nel.org>
> ---
> v2: this patch is added in patch set version 2
> ---
>  .../devicetree/bindings/fpga/intel-stratix10-soc-fpga-mgr.txt  | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/fpga/intel-stratix10-soc-fpga-mgr.txt
> 
> diff --git a/Documentation/devicetree/bindings/fpga/intel-stratix10-soc-fpga-mgr.txt b/Documentation/devicetree/bindings/fpga/intel-stratix10-soc-fpga-mgr.txt
> new file mode 100644
> index 0000000..78de689
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/fpga/intel-stratix10-soc-fpga-mgr.txt
> @@ -0,0 +1,10 @@
> +Intel Stratix10 SoC FPGA Manager
> +
> +Required properties:
> +- compatible : should contain "intel,stratix10-soc-fpga-mgr"
> +
> +Example:
> +
> +	fpga_mgr: fpga-mgr@0 {
> +		compatible = "intel,stratix10-soc-fpga-mgr";

No reg or anything else? Is that because it all goes thru the service 
layer firmware? Just get the service layer driver to instantiate a 
device for this driver or get rid of the 2 layers if that's all the 
firmware interface does. DT is not a Linux driver instantiation 
mechanism.

And build your dts files with "W=1" because there's an error in this 
example.

Rob