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Date:   Wed, 14 Sep 2022 10:14:14 -0500
From:   Rob Herring <robh@kernel.org>
To:     =?utf-8?B?QXLEsW7DpyDDnE5BTA==?= <arinc.unal@arinc9.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S . Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sean Wang <sean.wang@mediatek.com>,
        Landen Chao <Landen.Chao@mediatek.com>,
        DENG Qingfang <dqfext@gmail.com>,
        Sergio Paracuellos <sergio.paracuellos@gmail.com>,
        erkin.bozoglu@xeront.com, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-mips@vger.kernel.org
Subject: Re: [PATCH 04/10] dt-bindings: memory: mt7621: add syscon as
 compatible string
Message-ID: <20220914151414.GA2233841-robh@kernel.org>
References: <20220914085451.11723-1-arinc.unal@arinc9.com>
 <20220914085451.11723-5-arinc.unal@arinc9.com>
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On Wed, Sep 14, 2022 at 11:54:45AM +0300, Arınç ÜNAL wrote:
> Add syscon as a constant string on the compatible property as it's required
> for the SoC to work. Update the example accordingly.

It's not required. It's required to automagically create a regmap. That 
can be done yourself as well. The downside to adding 'syscon' is it 
requires a DT update. Maybe that's fine for this platform? I don't know.

> 
> Fixes: 5278e4a181ff ("dt-bindings: memory: add binding for Mediatek's MT7621 SDRAM memory controller")
> Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
> ---
>  .../bindings/memory-controllers/mediatek,mt7621-memc.yaml   | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,mt7621-memc.yaml b/Documentation/devicetree/bindings/memory-controllers/mediatek,mt7621-memc.yaml
> index 85e02854f083..6ccdaf99c778 100644
> --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,mt7621-memc.yaml
> +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,mt7621-memc.yaml
> @@ -11,7 +11,9 @@ maintainers:
>  
>  properties:
>    compatible:
> -    const: mediatek,mt7621-memc
> +    items:
> +      - const: mediatek,mt7621-memc
> +      - const: syscon
>  
>    reg:
>      maxItems: 1
> @@ -25,6 +27,6 @@ additionalProperties: false
>  examples:
>    - |
>      memory-controller@5000 {
> -        compatible = "mediatek,mt7621-memc";
> +        compatible = "mediatek,mt7621-memc", "syscon";
>          reg = <0x5000 0x1000>;
>      };
> -- 
> 2.34.1
> 
>