linux-kernel - Re: [PATCH v2 1/3] dt-bindings: riscv: Add DT documentation for DDR Controller in SiFive SoCs

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Message-ID: <20200915152435.GB1940827@bogus>
Date:   Tue, 15 Sep 2020 09:24:35 -0600
From:   Rob Herring <robh@...nel.org>
To:     Yash Shah <yash.shah@...ive.com>
Cc:     palmer@...belt.com, paul.walmsley@...ive.com, bp@...en8.de,
        mchehab@...nel.org, tony.luck@...el.com, aou@...s.berkeley.edu,
        james.morse@....com, rrichter@...vell.com,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org,
        sachin.ghadi@...ive.com
Subject: Re: [PATCH v2 1/3] dt-bindings: riscv: Add DT documentation for DDR
 Controller in SiFive SoCs

On Mon, Sep 07, 2020 at 11:17:57AM +0530, Yash Shah wrote:
> Add device tree bindings for SiFive FU540 DDR controller driver
> 
> Signed-off-by: Yash Shah <yash.shah@...ive.com>
> Reviewed-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
> Acked-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
> ---
>  .../devicetree/bindings/riscv/sifive-ddr.yaml      | 41 ++++++++++++++++++++++

Bindings are organized by function, not vendor/arch generally. This goes 
in bindings/memory-controllers/.

>  1 file changed, 41 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/riscv/sifive-ddr.yaml
> 
> diff --git a/Documentation/devicetree/bindings/riscv/sifive-ddr.yaml b/Documentation/devicetree/bindings/riscv/sifive-ddr.yaml
> new file mode 100644
> index 0000000..0288119
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/riscv/sifive-ddr.yaml
> @@ -0,0 +1,41 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/riscv/sifive-ddr.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SiFive DDR memory controller binding
> +
> +description: |
> +  The Sifive DDR controller driver is used to manage the Cadence DDR
> +  controller present in SiFive FU540-C000 SoC. Currently the driver is
> +  used to manage EDAC feature of the DDR controller.

Bindings describe h/w not drivers. What a driver supports is irrelevant.

> +
> +maintainers:
> +  - Yash Shah <yash.shah@...ive.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - sifive,fu540-c000-ddr
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    memory-controller@...b0000 {
> +        compatible = "sifive,fu540-c000-ddr";
> +        reg = <0x100b0000 0x4000>;
> +        interrupts = <31>;
> +    };
> -- 
> 2.7.4
>