linux-kernel - Re: [PATCH v1 4/4] dt-bindings: bus: add documentation for Aspeed AHBC

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Message-ID: <20220907205033.GA317033-robh@kernel.org>
Date:   Wed, 7 Sep 2022 15:50:33 -0500
From:   Rob Herring <robh@...nel.org>
To:     Neal Liu <neal_liu@...eedtech.com>
Cc:     Dhananjay Phadke <dphadke@...ux.microsoft.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "Chia-Wei Wang --cc=linux-kernel @ vger . kernel . org" 
        <chiawei_wang@...eedtech.com>, linux-crypto@...r.kernel.org,
        linux-aspeed@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, BMC-SW@...eedtech.com
Subject: Re: [PATCH v1 4/4] dt-bindings: bus: add documentation for Aspeed
 AHBC

On Fri, Sep 02, 2022 at 02:00:12PM +0800, Neal Liu wrote:
> Add device tree binding documentation for the Aspeed
> Advanced High-Performance Bus (AHB) Controller.
> 
> Signed-off-by: Neal Liu <neal_liu@...eedtech.com>
> ---
>  .../bindings/bus/aspeed,ast2600-ahbc.yaml     | 39 +++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/bus/aspeed,ast2600-ahbc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/bus/aspeed,ast2600-ahbc.yaml b/Documentation/devicetree/bindings/bus/aspeed,ast2600-ahbc.yaml
> new file mode 100644
> index 000000000000..ca09eb531666
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/bus/aspeed,ast2600-ahbc.yaml
> @@ -0,0 +1,39 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bus/aspeed,ast2600-ahbc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ASPEED Advanced High-Performance Bus Controller (AHBC) Device Tree Bindings
> +
> +maintainers:
> +  - Neal Liu <neal_liu@...eedtech.com>
> +  - Chia-Wei Wang <chiawei_wang@...eedtech.com>
> +
> +description: |
> +  Advanced High-performance Bus Controller (AHBC) supports plenty of mechanisms
> +  including a priority arbiter, an address decoder and a data multiplexer
> +  to control the overall operations of Advanced Highperformance

High-performance

> +  Bus (AHB). AHB is the main system bus for ARM CPU to communicate with the
> +  related peripherals.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - aspeed,ast2600-ahbc
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    ahbc: bus@...00000 {
> +        compatible = "aspeed,ast2600-ahbc";
> +        reg = <0x1e600000 0x100>;

Shouldn't devices on the bus be child nodes? 

> +    };
> -- 
> 2.25.1
> 
>