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Date: Thu, 1 Feb 2024 09:07:34 +0100
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Subject: Re: [PATCH 2/3] dt-bindings: fpga: xlnx,fpga-slave-selectmap: add DT
 schema
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To: Charles Perry <charles.perry@savoirfairelinux.com>, mdf@kernel.org
Cc: avandiver@markem-imaje.com, bcody@markem-imaje.com,
 Wu Hao <hao.wu@intel.com>, Xu Yilun <yilun.xu@intel.com>,
 Tom Rix <trix@redhat.com>, Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Michal Simek <michal.simek@amd.com>,
 linux-fpga@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
References: <20240129225602.3832449-1-charles.perry@savoirfairelinux.com>
 <20240131230542.3993409-1-charles.perry@savoirfairelinux.com>
 <20240131230542.3993409-3-charles.perry@savoirfairelinux.com>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20240131230542.3993409-3-charles.perry@savoirfairelinux.com>
Content-Type: text/plain; charset=UTF-8
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On 01/02/2024 00:05, Charles Perry wrote:
> Document the slave SelectMAP interface of Xilinx 7 series FPGA.
> 
> Signed-off-by: Charles Perry <charles.perry@savoirfairelinux.com>
> ---
>  .../bindings/fpga/xlnx,fpga-selectmap.yaml    | 83 +++++++++++++++++++
>  1 file changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/fpga/xlnx,fpga-selectmap.yaml
> 
> diff --git a/Documentation/devicetree/bindings/fpga/xlnx,fpga-selectmap.yaml b/Documentation/devicetree/bindings/fpga/xlnx,fpga-selectmap.yaml
> new file mode 100644
> index 0000000000000..c9a446b43cdd9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/fpga/xlnx,fpga-selectmap.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/fpga/xlnx,fpga-selectmap.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx SelectMAP FPGA interface
> +
> +maintainers:
> +  - Charles Perry <charles.perry@savoirfairelinux.com>
> +
> +description: |
> +  Xilinx 7 Series FPGAs support a method of loading the bitstream over a
> +  parallel port named the SelectMAP interface in the documentation. Only
> +  the x8 mode is supported where data is loaded at one byte per rising edge of
> +  the clock, with the MSB of each byte presented to the D0 pin.
> +
> +  Datasheets:
> +    https://www.xilinx.com/support/documentation/user_guides/ug470_7Series_Config.pdf
> +
> +allOf:
> +  - $ref: /schemas/memory-controllers/mc-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - xlnx,fpga-selectmap

Your description mentions "7 Series" which is not present in compatible
and title. What is exactly the product here? Interface usually is not
the final binding, so is this specific to some particular FPGA or SoC?


Best regards,
Krzysztof