linux-kernel - Re: [PATCH] dt-bindings: rpc: renesas-rpc-if: Add support for the R8A779A0 RPC-IF

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Message-ID: <b1a35304-76e9-c001-fffe-edb785cb21a4@canonical.com>
Date:   Fri, 24 Sep 2021 13:59:01 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sergei Shtylyov <sergei.shtylyov@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: rpc: renesas-rpc-if: Add support for the
 R8A779A0 RPC-IF

On 24/09/2021 13:55, Geert Uytterhoeven wrote:
> Hi Krzysztof,
> 
> On Fri, Sep 24, 2021 at 1:48 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@...onical.com> wrote:
>> On 22/09/2021 10:58, Wolfram Sang wrote:
>>> --- a/Documentation/devicetree/bindings/memory-controllers/renesas,rpc-if.yaml
>>> +++ b/Documentation/devicetree/bindings/memory-controllers/renesas,rpc-if.yaml
>>> @@ -33,6 +33,7 @@ properties:
>>>            - renesas,r8a77970-rpc-if       # R-Car V3M
>>>            - renesas,r8a77980-rpc-if       # R-Car V3H
>>>            - renesas,r8a77995-rpc-if       # R-Car D3
>>> +          - renesas,r8a779a0-rpc-if       # R-Car V3U
>>>        - const: renesas,rcar-gen3-rpc-if   # a generic R-Car gen3 or RZ/G2 device
>>
>> Where is the driver or DTS using these compatibles? The bindings can
>> come even without users, but are you sure this is what you want?
>> Changing them later, if ever needed, will be more difficult.
> 
> Driver:
>     drivers/memory/renesas-rpc-if.c:        { .compatible =
> "renesas,rcar-gen3-rpc-if", },
> 
> DTS:
>     [RFC PATCH 3/4] arm64: dts: renesas: r8a779a0: Add RPC node
>     https://lore.kernel.org/linux-renesas-soc/20210913065317.2297-4-wsa+renesas@sang-engineering.com/
> 

I see, thanks. It wasn't sent to main LKML so I did not find it in archives.


Best regards,
Krzysztof