linux-kernel - Re: [PATCH 2/2] dt-bindings: arm: sunxi: Add several MBUS compatibles

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Date:   Tue, 12 Jul 2022 13:52:45 +0800
From:   Icenowy Zheng <uwu@...nowy.me>
To:     Samuel Holland <samuel@...lland.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Chanwoo Choi <cw00.choi@...sung.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <maxime@...no.tech>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH 2/2] dt-bindings: arm: sunxi: Add several MBUS
 compatibles

在 2022-07-01星期五的 23:24 -0500，Samuel Holland写道：
> All of the sunxi SoCs since at least the A33 have a similar structure
> for the MBUS and DRAM controller, but they all have minor differences
> in
> MBUS port assignments and DRAM controller behavior. Give each SoC its
> own compatible.

Should this kind of assignment be described in DT instead?

> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
> 
>  .../bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml   | 10
> ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git
> a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-
> mbus.yaml
> b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-
> mbus.yaml
> index 2b018feb56df..99566688d033 100644
> --- a/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-
> a10-mbus.yaml
> +++ b/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-
> a10-mbus.yaml
> @@ -29,10 +29,20 @@ properties:
>    compatible:
>      enum:
>        - allwinner,sun5i-a13-mbus
> +      - allwinner,sun8i-a33-mbus
> +      - allwinner,sun8i-a50-mbus
> +      - allwinner,sun8i-a83t-mbus
>        - allwinner,sun8i-h3-mbus
>        - allwinner,sun8i-r40-mbus
> +      - allwinner,sun8i-v3s-mbus
> +      - allwinner,sun8i-v536-mbus
> +      - allwinner,sun20i-d1-mbus
>        - allwinner,sun50i-a64-mbus
> +      - allwinner,sun50i-a100-mbus
>        - allwinner,sun50i-h5-mbus
> +      - allwinner,sun50i-h6-mbus
> +      - allwinner,sun50i-h616-mbus
> +      - allwinner,sun50i-r329-mbus
>  
>    reg:
>      minItems: 1