linux-kernel - Re: [PATCH 1/2] dt-bindings: memory: convert Marvell MVEBU SDRAM controller to dtschema

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Message-ID: <17798cb01c5d699738f57118d4deb53504759818.camel@pengutronix.de>
Date:   Tue, 17 Aug 2021 12:46:57 +0200
From:   Jan Lübbe <jlu@...gutronix.de>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>, linux-edac@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: memory: convert Marvell MVEBU SDRAM
 controller to dtschema

On Tue, 2021-08-17 at 11:38 +0200, Krzysztof Kozlowski wrote:
> Convert Marvell MVEBU SDRAM controller bindings to DT schema format
> using json-schema.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
> ---
>  .../marvell,mvebu-sdram-controller.yaml       | 31 +++++++++++++++++++
>  .../mvebu-sdram-controller.txt                | 21 -------------
>  2 files changed, 31 insertions(+), 21 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/memory-controllers/marvell,mvebu-sdram-controller.yaml
>  delete mode 100644 Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt
> 
> diff --git a/Documentation/devicetree/bindings/memory-controllers/marvell,mvebu-sdram-controller.yaml b/Documentation/devicetree/bindings/memory-controllers/marvell,mvebu-sdram-controller.yaml
> new file mode 100644
> index 000000000000..14a6bc8f421f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/memory-controllers/marvell,mvebu-sdram-controller.yaml
> @@ -0,0 +1,31 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/memory-controllers/marvell,mvebu-sdram-controller.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Marvell MVEBU SDRAM controller
> +
> +maintainers:
> +  - Jan Luebbe <jlu@...gutronix.de>
> +  - Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
> +
> +properties:
> +  compatible:
> +    const: marvell,armada-xp-sdram-controller
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    memory-controller@...0 {
> +        compatible = "marvell,armada-xp-sdram-controller";
> +        reg = <0x1400 0x500>;
> +    };
> diff --git a/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt b/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt
> deleted file mode 100644
> index 89657d1d4cd4..000000000000
> --- a/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt
> +++ /dev/null
> @@ -1,21 +0,0 @@
> -Device Tree bindings for MVEBU SDRAM controllers
> -
> -The Marvell EBU SoCs all have a SDRAM controller. The SDRAM controller
> -differs from one SoC variant to another, but they also share a number
> -of commonalities.
> -
> -For now, this Device Tree binding documentation only documents the
> -Armada XP SDRAM controller.

Please keep the description, otherwise it would be confusing why the binding is
named marvell,mvebu-sdram-controller.yaml although it (currenly) only applies to
the Armada XP.

Jan

> -
> -Required properties:
> -
> - - compatible: for Armada XP, "marvell,armada-xp-sdram-controller"
> - - reg: a resource specifier for the register space, which should
> -   include all SDRAM controller registers as per the datasheet.
> -
> -Example:
> -
> -sdramc@...0 {
> -	compatible = "marvell,armada-xp-sdram-controller";
> -	reg = <0x1400 0x500>;
> -};

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